diff --git a/.check.exs b/.check.exs
index 2028bba..e22697b 100644
--- a/.check.exs
+++ b/.check.exs
@@ -3,7 +3,7 @@
 last_supported_version? =
   System.version()
   |> Version.parse!()
-  |> Version.match?("~> 1.10.0")
+  |> Version.match?("~> 1.13.0")
 
 [
   skipped: false,
diff --git a/.credo.exs b/.credo.exs
index c5c9968..f68203a 100644
--- a/.credo.exs
+++ b/.credo.exs
@@ -64,135 +64,151 @@
       #
       #     {Credo.Check.Design.DuplicatedCode, false}
       #
-      checks: [
-        #
-        ## Consistency Checks
-        #
-        {Credo.Check.Consistency.ExceptionNames, []},
-        {Credo.Check.Consistency.LineEndings, []},
-        {Credo.Check.Consistency.ParameterPatternMatching, []},
-        {Credo.Check.Consistency.SpaceAroundOperators, []},
-        {Credo.Check.Consistency.SpaceInParentheses, []},
-        {Credo.Check.Consistency.TabsOrSpaces, []},
+      checks: %{
+        enabled: [
+          #
+          ## Consistency Checks
+          #
+          {Credo.Check.Consistency.ExceptionNames, []},
+          {Credo.Check.Consistency.LineEndings, []},
+          {Credo.Check.Consistency.ParameterPatternMatching, []},
+          {Credo.Check.Consistency.SpaceAroundOperators, []},
+          {Credo.Check.Consistency.SpaceInParentheses, []},
+          {Credo.Check.Consistency.TabsOrSpaces, []},
 
-        #
-        ## Design Checks
-        #
-        # You can customize the priority of any check
-        # Priority values are: `low, normal, high, higher`
-        #
-        {Credo.Check.Design.AliasUsage,
-         [
-           priority: :low,
-           if_nested_deeper_than: 2,
-           if_called_more_often_than: 0
-         ]},
-        # You can also customize the exit_status of each check.
-        # If you don't want TODO comments to cause `mix credo` to fail, just
-        # set this value to 0 (zero).
-        #
-        {Credo.Check.Design.TagTODO, [exit_status: 0]},
-        {Credo.Check.Design.TagFIXME, []},
+          #
+          ## Design Checks
+          #
+          # You can customize the priority of any check
+          # Priority values are: `low, normal, high, higher`
+          #
+          {Credo.Check.Design.AliasUsage,
+           [
+             priority: :low,
+             if_nested_deeper_than: 2,
+             if_called_more_often_than: 0
+           ]},
+          # You can also customize the exit_status of each check.
+          # If you don't want TODO comments to cause `mix credo` to fail, just
+          # set this value to 0 (zero).
+          #
+          {Credo.Check.Design.TagTODO, [exit_status: 0]},
+          {Credo.Check.Design.TagFIXME, []},
 
-        #
-        ## Readability Checks
-        #
-        {Credo.Check.Readability.AliasOrder, []},
-        {Credo.Check.Readability.FunctionNames, []},
-        {Credo.Check.Readability.LargeNumbers, []},
-        {Credo.Check.Readability.MaxLineLength,
-         [priority: :low, max_length: 80]},
-        {Credo.Check.Readability.ModuleAttributeNames, []},
-        {Credo.Check.Readability.ModuleDoc, []},
-        {Credo.Check.Readability.ModuleNames, []},
-        {Credo.Check.Readability.ParenthesesInCondition, []},
-        {Credo.Check.Readability.ParenthesesOnZeroArityDefs, []},
-        {Credo.Check.Readability.PredicateFunctionNames, []},
-        {Credo.Check.Readability.PreferImplicitTry, []},
-        {Credo.Check.Readability.RedundantBlankLines, []},
-        {Credo.Check.Readability.Semicolons, []},
-        {Credo.Check.Readability.SpaceAfterCommas, []},
-        {Credo.Check.Readability.StringSigils, []},
-        {Credo.Check.Readability.TrailingBlankLine, []},
-        {Credo.Check.Readability.TrailingWhiteSpace, []},
-        {Credo.Check.Readability.UnnecessaryAliasExpansion, []},
-        {Credo.Check.Readability.VariableNames, []},
+          #
+          ## Readability Checks
+          #
+          {Credo.Check.Readability.AliasOrder, []},
+          {Credo.Check.Readability.FunctionNames, []},
+          {Credo.Check.Readability.LargeNumbers, []},
+          {Credo.Check.Readability.MaxLineLength,
+           [priority: :low, max_length: 80]},
+          {Credo.Check.Readability.ModuleAttributeNames, []},
+          {Credo.Check.Readability.ModuleDoc, []},
+          {Credo.Check.Readability.ModuleNames, []},
+          {Credo.Check.Readability.ParenthesesInCondition, []},
+          {Credo.Check.Readability.ParenthesesOnZeroArityDefs, []},
+          {Credo.Check.Readability.PipeIntoAnonymousFunctions, []},
+          {Credo.Check.Readability.PredicateFunctionNames, []},
+          {Credo.Check.Readability.PreferImplicitTry, []},
+          {Credo.Check.Readability.RedundantBlankLines, []},
+          {Credo.Check.Readability.Semicolons, []},
+          {Credo.Check.Readability.SpaceAfterCommas, []},
+          {Credo.Check.Readability.StringSigils, []},
+          {Credo.Check.Readability.TrailingBlankLine, []},
+          {Credo.Check.Readability.TrailingWhiteSpace, []},
+          {Credo.Check.Readability.UnnecessaryAliasExpansion, []},
+          {Credo.Check.Readability.VariableNames, []},
+          {Credo.Check.Readability.WithSingleClause, []},
 
-        #
-        ## Refactoring Opportunities
-        #
-        {Credo.Check.Refactor.CondStatements, []},
-        {Credo.Check.Refactor.CyclomaticComplexity, []},
-        {Credo.Check.Refactor.FunctionArity, []},
-        {Credo.Check.Refactor.LongQuoteBlocks, []},
-        {Credo.Check.Refactor.MapInto, false},
-        {Credo.Check.Refactor.MatchInCondition, []},
-        {Credo.Check.Refactor.NegatedConditionsInUnless, []},
-        {Credo.Check.Refactor.NegatedConditionsWithElse, []},
-        {Credo.Check.Refactor.Nesting, []},
-        {Credo.Check.Refactor.UnlessWithElse, []},
-        {Credo.Check.Refactor.WithClauses, []},
+          #
+          ## Refactoring Opportunities
+          #
+          {Credo.Check.Refactor.Apply, []},
+          {Credo.Check.Refactor.CondStatements, []},
+          {Credo.Check.Refactor.CyclomaticComplexity, []},
+          {Credo.Check.Refactor.FunctionArity, []},
+          {Credo.Check.Refactor.LongQuoteBlocks, []},
+          {Credo.Check.Refactor.MatchInCondition, []},
+          {Credo.Check.Refactor.MapJoin, []},
+          {Credo.Check.Refactor.NegatedConditionsInUnless, []},
+          {Credo.Check.Refactor.NegatedConditionsWithElse, []},
+          {Credo.Check.Refactor.Nesting, []},
+          {Credo.Check.Refactor.UnlessWithElse, []},
+          {Credo.Check.Refactor.WithClauses, []},
+          {Credo.Check.Refactor.FilterFilter, []},
+          {Credo.Check.Refactor.RejectReject, []},
+          {Credo.Check.Refactor.RedundantWithClauseResult, []},
 
-        #
-        ## Warnings
-        #
-        {Credo.Check.Warning.BoolOperationOnSameValues, []},
-        {Credo.Check.Warning.ExpensiveEmptyEnumCheck, []},
-        {Credo.Check.Warning.IExPry, []},
-        {Credo.Check.Warning.IoInspect, []},
-        {Credo.Check.Warning.LazyLogging, false},
-        {Credo.Check.Warning.MixEnv, false},
-        {Credo.Check.Warning.OperationOnSameValues, []},
-        {Credo.Check.Warning.OperationWithConstantResult, []},
-        {Credo.Check.Warning.RaiseInsideRescue, []},
-        {Credo.Check.Warning.UnusedEnumOperation, []},
-        {Credo.Check.Warning.UnusedFileOperation, []},
-        {Credo.Check.Warning.UnusedKeywordOperation, []},
-        {Credo.Check.Warning.UnusedListOperation, []},
-        {Credo.Check.Warning.UnusedPathOperation, []},
-        {Credo.Check.Warning.UnusedRegexOperation, []},
-        {Credo.Check.Warning.UnusedStringOperation, []},
-        {Credo.Check.Warning.UnusedTupleOperation, []},
-        {Credo.Check.Warning.UnsafeExec, []},
+          #
+          ## Warnings
+          #
+          {Credo.Check.Warning.ApplicationConfigInModuleAttribute, []},
+          {Credo.Check.Warning.BoolOperationOnSameValues, []},
+          {Credo.Check.Warning.ExpensiveEmptyEnumCheck, []},
+          {Credo.Check.Warning.IExPry, []},
+          {Credo.Check.Warning.IoInspect, []},
+          {Credo.Check.Warning.OperationOnSameValues, []},
+          {Credo.Check.Warning.OperationWithConstantResult, []},
+          {Credo.Check.Warning.RaiseInsideRescue, []},
+          {Credo.Check.Warning.SpecWithStruct, []},
+          {Credo.Check.Warning.WrongTestFileExtension, []},
+          {Credo.Check.Warning.UnusedEnumOperation, []},
+          {Credo.Check.Warning.UnusedFileOperation, []},
+          {Credo.Check.Warning.UnusedKeywordOperation, []},
+          {Credo.Check.Warning.UnusedListOperation, []},
+          {Credo.Check.Warning.UnusedPathOperation, []},
+          {Credo.Check.Warning.UnusedRegexOperation, []},
+          {Credo.Check.Warning.UnusedStringOperation, []},
+          {Credo.Check.Warning.UnusedTupleOperation, []},
+          {Credo.Check.Warning.UnsafeExec, []}
+        ],
+        disabled: [
+          #
+          # Checks scheduled for next check update (opt-in for now, just replace `false` with `[]`)
 
-        #
-        # Checks scheduled for next check update (opt-in for now, just replace `false` with `[]`)
+          #
+          # Controversial and experimental checks (opt-in, just move the check to `:enabled`
+          #   and be sure to use `mix credo --strict` to see low priority checks)
+          #
+          {Credo.Check.Consistency.MultiAliasImportRequireUse, []},
+          {Credo.Check.Consistency.UnusedVariableNames, []},
+          {Credo.Check.Design.DuplicatedCode, []},
+          {Credo.Check.Design.SkipTestWithoutComment, []},
+          {Credo.Check.Readability.AliasAs, []},
+          {Credo.Check.Readability.BlockPipe, []},
+          {Credo.Check.Readability.ImplTrue, []},
+          {Credo.Check.Readability.MultiAlias, []},
+          {Credo.Check.Readability.SeparateAliasRequire, []},
+          {Credo.Check.Readability.SingleFunctionToBlockPipe, []},
+          {Credo.Check.Readability.SinglePipe, []},
+          {Credo.Check.Readability.Specs, []},
+          {Credo.Check.Readability.StrictModuleLayout, []},
+          {Credo.Check.Readability.WithCustomTaggedTuple, []},
+          {Credo.Check.Refactor.ABCSize, []},
+          {Credo.Check.Refactor.AppendSingleItem, []},
+          {Credo.Check.Refactor.DoubleBooleanNegation, []},
+          {Credo.Check.Refactor.FilterReject, []},
+          {Credo.Check.Refactor.IoPuts, []},
+          {Credo.Check.Refactor.MapMap, []},
+          {Credo.Check.Refactor.ModuleDependencies, []},
+          {Credo.Check.Refactor.NegatedIsNil, []},
+          {Credo.Check.Refactor.PipeChainStart, []},
+          {Credo.Check.Refactor.RejectFilter, []},
+          {Credo.Check.Refactor.VariableRebinding, []},
+          {Credo.Check.Warning.LazyLogging, []},
+          {Credo.Check.Warning.LeakyEnvironment, []},
+          {Credo.Check.Warning.MapGetUnsafePass, []},
+          {Credo.Check.Warning.MixEnv, []},
+          {Credo.Check.Warning.UnsafeToAtom, []}
 
-        #
-        # Controversial and experimental checks (opt-in, just replace `false` with `[]`)
-        #
-        {Credo.Check.Readability.StrictModuleLayout, false},
-        {Credo.Check.Consistency.MultiAliasImportRequireUse, false},
-        {Credo.Check.Consistency.UnusedVariableNames, false},
-        # If you don't want the `setup` and `test` macro calls in ExUnit tests
-        # or the `schema` macro in Ecto schemas to trigger DuplicatedCode, just
-        # set the `excluded_macros` parameter to `[:schema, :setup, :test]`.
-        #
-        {Credo.Check.Design.DuplicatedCode, [excluded_macros: []]},
-        {Credo.Check.Readability.AliasAs, false},
-        {Credo.Check.Readability.MultiAlias, false},
-        {Credo.Check.Readability.Specs, false},
-        {Credo.Check.Readability.SinglePipe, false},
-        {Credo.Check.Readability.WithCustomTaggedTuple, false},
-        {Credo.Check.Refactor.ABCSize, false},
-        {Credo.Check.Refactor.AppendSingleItem, false},
-        {Credo.Check.Refactor.DoubleBooleanNegation, false},
-        {Credo.Check.Refactor.ModuleDependencies, false},
-        {Credo.Check.Refactor.NegatedIsNil, false},
-        {Credo.Check.Refactor.PipeChainStart,
-         [
-           excluded_argument_types: [:atom, :binary, :fn, :keyword],
-           excluded_functions: []
-         ]},
-        {Credo.Check.Refactor.VariableRebinding, false},
-        {Credo.Check.Warning.LeakyEnvironment, false},
-        {Credo.Check.Warning.MapGetUnsafePass, false},
-        {Credo.Check.Warning.UnsafeToAtom, false}
+          # {Credo.Check.Refactor.MapInto, []},
 
-        #
-        # Custom checks can be created using `mix credo.gen.check`.
-        #
-      ]
+          #
+          # Custom checks can be created using `mix credo.gen.check`.
+          #
+        ]
+      }
     }
   ]
 }
diff --git a/.dialyzer_ignore b/.dialyzer_ignore
index 8b13789..e69de29 100644
--- a/.dialyzer_ignore
+++ b/.dialyzer_ignore
@@ -1 +0,0 @@
-
diff --git a/.envrc b/.envrc
index 6d28500..1d953f4 100644
--- a/.envrc
+++ b/.envrc
@@ -1,84 +1 @@
-####################################
-# Environment setup for Nix shells #
-####################################
-
-# From https://github.com/direnv/direnv/wiki/Nix#persistent-cached-shell
-#
-# Usage: use_nix [...]
-#
-# Load environment variables from `nix-shell`.
-# If you have a `default.nix` or `shell.nix` one of these will be used and
-# the derived environment will be stored at ./.direnv/env-<hash>
-# and symlink to it will be created at ./.direnv/default.
-# Dependencies are added to the GC roots, such that the environment remains persistent.
-#
-# Packages can also be specified directly via e.g `use nix -p ocaml`,
-# however those will not be added to the GC roots.
-#
-# The resulting environment is cached for better performance.
-#
-# To trigger switch to a different environment:
-# `rm -f .direnv/default`
-#
-# To derive a new environment:
-# `rm -rf .direnv/env-$(md5sum {shell,default}.nix 2> /dev/null | cut -c -32)`
-#
-# To remove cache:
-# `rm -f .direnv/dump-*`
-#
-# To remove all environments:
-# `rm -rf .direnv/env-*`
-#
-# To remove only old environments:
-# `find .direnv -name 'env-*' -and -not -name `readlink .direnv/default` -exec rm -rf {} +`
-#
-use_nix() {
-    set -e
-
-    local shell="shell.nix"
-    if [[ ! -f "${shell}" ]]; then
-        shell="default.nix"
-    fi
-
-    if [[ ! -f "${shell}" ]]; then
-        fail "use nix: shell.nix or default.nix not found in the folder"
-    fi
-
-    local dir="${PWD}"/.direnv
-    local default="${dir}/default"
-    if [[ ! -L "${default}" ]] || [[ ! -d `readlink "${default}"` ]]; then
-        local wd="${dir}/env-`md5sum "${shell}" | cut -c -32`" # TODO: Hash also the nixpkgs version?
-        mkdir -p "${wd}"
-
-        local drv="${wd}/env.drv"
-        if [[ ! -f "${drv}" ]]; then
-            log_status "use nix: deriving new environment"
-            IN_NIX_SHELL=1 nix-instantiate --add-root "${drv}" --indirect "${shell}" > /dev/null
-            nix-store -r `nix-store --query --references "${drv}"` --add-root "${wd}/dep" --indirect > /dev/null
-        fi
-
-        rm -f "${default}"
-        ln -s `basename "${wd}"` "${default}"
-    fi
-
-    local drv=`readlink -f "${default}/env.drv"`
-    local dump="${dir}/dump-`md5sum ".envrc" | cut -c -32`-`md5sum ${drv} | cut -c -32`"
-
-    if [[ ! -f "${dump}" ]] || [[ "${XDG_CONFIG_DIR}/direnv/direnvrc" -nt "${dump}" ]]; then
-        log_status "use nix: updating cache"
-
-        old=`find "${dir}" -name 'dump-*'`
-        nix-shell "${drv}" --show-trace "$@" --run 'direnv dump' > "${dump}"
-        rm -f ${old}
-    fi
-
-    direnv_load cat "${dump}"
-
-    watch_file "${default}"
-    watch_file shell.nix
-    if [[ ${shell} == "default.nix" ]]; then
-        watch_file default.nix
-    fi
-}
-
 use nix
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
new file mode 100644
index 0000000..58356ea
--- /dev/null
+++ b/.github/workflows/ci.yml
@@ -0,0 +1,49 @@
+name: "CI checks"
+
+on:
+  push:
+    branches:
+      - main
+      - develop
+      - release/*
+      - feature/*
+    pull_request:
+      branches:
+        - develop
+
+jobs:
+  check:
+    name: "CI checks for typed_struct_lens [OTP ${{matrix.otp}} / Elixir ${{matrix.elixir}}]"
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - elixir: "1.9"
+            otp: "22.3"
+          - elixir: "1.10"
+            otp: "22.3"
+          - elixir: "1.10"
+            otp: "23.3"
+          - elixir: "1.11"
+            otp: "23.3"
+          - elixir: "1.12"
+            otp: "23.3"
+          - elixir: "1.12"
+            otp: "24.0"
+          - elixir: "1.13"
+            otp: "23.3"
+          - elixir: "1.13"
+            otp: "24.0"
+    steps:
+      - name: Checkout the repository
+        uses: actions/checkout@v2.4.0
+      - name: Install Elixir/OTP
+        uses: erlef/setup-beam@v1.10.0
+        with:
+          otp-version: ${{matrix.otp}}
+          elixir-version: ${{matrix.elixir}}
+      - name: Fetch the dependencies
+        run: mix deps.get
+      - name: Check (mix check)
+        run: mix check
diff --git a/.travis.yml b/.travis.yml
deleted file mode 100644
index 2e5da8a..0000000
--- a/.travis.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-language: elixir
-matrix:
-  include:
-    - elixir: 1.6
-      otp_release: 20.3
-    - elixir: 1.7
-      otp_release: 22.3
-    - elixir: 1.8
-      otp_release: 22.3
-    - elixir: 1.9
-      otp_release: 22.3
-    - elixir: 1.10
-      otp_release: 22.3
-    - elixir: 1.10
-      otp_release: 23.0
-env:
-  - PLT_DIR=$HOME/.plt
-before_script:
-  - mkdir -p $PLT_DIR
-  - mix deps.compile
-  - MIX_ENV=test mix deps.compile
-  - travis_wait mix dialyzer --plt
-script:
-  - mix check
-cache:
-  directories:
-    - $PLT_DIR
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 707c6ef..406c4ff 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,13 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic
 Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.1.1] - 2022-03-19
+
+### Changed
+
+* Update `typed_struct` to 0.3.0.
+* Update `lens` to 1.0.0.
+
 ## [0.1.0] - 2020-05-31
 
 ### Added
@@ -14,4 +21,5 @@ Versioning](https://semver.org/spec/v2.0.0.html).
 * Optionally generate private lens functions
 * Optionally prefix or postfix the generated function names
 
+[0.1.1]: https://github.com/ejpcmac/typed_struct_lens/compare/v0.1.0...v0.1.1
 [0.1.0]: https://github.com/ejpcmac/typed_struct_lens/releases/tag/v0.1.0
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index b98d358..769e642 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -3,9 +3,9 @@
 TypedStructLens is written in [Elixir](https://elixir-lang.org).
 
 For branching management, this project uses
-[git-flow](https://github.com/petervanderdoes/gitflow-avh). The `master` branch
-is reserved for releases: the development process occurs on `develop` and
-feature branches. **Please never commit to master.**
+[git-flow](https://github.com/petervanderdoes/gitflow-avh). The `main` branch is
+reserved for releases: the development process occurs on `develop` and feature
+branches. **Please never commit to `main`.**
 
 You can easily set up a development environment featuring all the dependencies,
 including Elixir and `git-flow`, by using [Nix](https://nixos.org/nix/). This is
@@ -15,7 +15,7 @@ detailed below.
 
 ### Local repository
 
-1. Fork the repository
+1. Fork the repository.
 
 2. Clone your fork to a local repository:
 
@@ -26,7 +26,7 @@ detailed below.
 
         $ git remote add upstream https://github.com/ejpcmac/typed_struct_lens.git
 
-4. Checkout to `develop`:
+4. Checkout `develop`:
 
         $ git checkout develop
 
@@ -77,14 +77,14 @@ run:
 
 ### Building the project
 
-1. Fetch the project dependencies and build the project:
+1. Fetch the project dependencies:
 
         $ cd typed_struct_lens
-        $ mix do deps.get, compile
+        $ mix deps.get
 
-2. Launch the tests:
+2. Run the static analyzers:
 
-        $ mix test
+        $ mix check
 
 All the tests should pass.
 
@@ -92,7 +92,7 @@ All the tests should pass.
 
 To make a change, please use this workflow:
 
-1. Checkout to `develop` and apply the last upstream changes (use rebase, not
+1. Checkout `develop` and apply the last upstream changes (use rebase, not
     merge!):
 
         $ git checkout develop
@@ -116,9 +116,9 @@ To make a change, please use this workflow:
     `cover/excoveralls.html`):
 
         # Some work
-        $ git commit -am "My first change"
+        $ git commit -am "feat: my first change"
         # Some work
-        $ git commit -am "My second change"
+        $ git commit -am "refactor: my second change"
         ...
 
 4. When your feature is ready, feel free to use
@@ -144,9 +144,7 @@ To make a change, please use this workflow:
 6. Run the tests and static analyzers to ensure there is no regression and all
     works as expected:
 
-        $ mix test
-        $ mix dialyzer
-        $ mix credo
+        $ mix check
 
 7. If it’s all good, open a pull request to merge your branch into the `develop`
     branch on the main repository.
@@ -158,3 +156,6 @@ Please format your code with `mix format` or your editor and follow
 
 All contributed code must be documented and functions must have typespecs. In
 general, take your inspiration from the existing code.
+
+Please name your commits using [Conventional
+Commits](https://www.conventionalcommits.org/en/v1.0.0/).
diff --git a/LICENSE b/LICENSE
index 3d17475..06ea222 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2020 Jean-Philippe Cugnet
+Copyright (c) 2020, 2022 Jean-Philippe Cugnet
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 673bdc1..2e94400 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,8 @@
 [![Build Status](https://travis-ci.com/ejpcmac/typed_struct_lens.svg?branch=develop)](https://travis-ci.com/ejpcmac/typed_struct_lens)
 [![hex.pm version](http://img.shields.io/hexpm/v/typed_struct_lens.svg?style=flat)](https://hex.pm/packages/typed_struct_lens)
 
+<!-- @moduledoc -->
+
 TypedStructLens is a [TypedStruct](https://github.com/ejpcmac/typed_struct)
 plugin for defining a [Lens](https://github.com/obrok/lens) on each field
 without writing boilerplate code.
@@ -58,7 +60,7 @@ end
 To use this plugin in your project, add this to your Mix dependencies:
 
 ```elixir
-{:typed_struct_lens, "~> 0.1.0"}
+{:typed_struct_lens, "~> 0.1.1"}
 ```
 
 If you do not plan to compile modules using this TypedStruct plugin at
@@ -152,6 +154,8 @@ defmodule MyStruct do
 end
 ```
 
+<!-- @moduledoc -->
+
 ## [Contributing](CONTRIBUTING.md)
 
 Before contributing to this project, please read the
@@ -159,6 +163,6 @@ Before contributing to this project, please read the
 
 ## License
 
-Copyright © 2020 Jean-Philippe Cugnet
+Copyright © 2020, 2022 Jean-Philippe Cugnet
 
 This project is licensed under the [MIT license](LICENSE).
diff --git a/config/config.exs b/config/config.exs
index f468b2a..507651e 100644
--- a/config/config.exs
+++ b/config/config.exs
@@ -1,4 +1,4 @@
-use Mix.Config
+import Config
 
 # This configuration is loaded before any dependency and is restricted to this
 # project. If another project depends on this project, this file won’t be loaded
diff --git a/lib/typed_struct_lens.ex b/lib/typed_struct_lens.ex
index 890ab8c..0c02773 100644
--- a/lib/typed_struct_lens.ex
+++ b/lib/typed_struct_lens.ex
@@ -1,146 +1,15 @@
 defmodule TypedStructLens do
-  @moduledoc """
-  TypedStructLens is a [TypedStruct](https://github.com/ejpcmac/typed_struct)
-  plugin for defining a [Lens](https://github.com/obrok/lens) on each field
-  without writing boilerplate code.
-
-  ## Rationale
-
-  If you define your structs with TypedStruct and use Lens alongside, you may
-  end up defining lenses for your fields:
-
-      defmodule Person do
-        use TypedStruct
-
-        import Lens.Macros
-
-        typedstruct do
-          field :name, String.t(), enforce: true
-          field :age, non_neg_integer()
-          field :happy?, boolean(), default: true
-          field :phone, String.t()
-        end
-
-        deflens name, do: Lens.key(:name)
-        deflens age, do: Lens.key(:age)
-        deflens happy?, do: Lens.key(:happy?)
-        deflens phone, do: Lens.key(:phone)
-      end
-
-  But if you are using TypedStruct, it is also highly probable that you do not
-  like to write boilerplate code. TypedStructLens is here to write the `deflens`
-  for you:
-
-      defmodule Person do
-        use TypedStruct
-
-        typedstruct do
-          plugin TypedStructLens
-
-          field :name, String.t(), enforce: true
-          field :age, non_neg_integer()
-          field :happy?, boolean(), default: true
-          field :phone, String.t()
-        end
-      end
-
-  ## Usage
-
-  ### Setup
-
-  To use this plugin in your project, add this to your Mix dependencies:
-
-      {:typed_struct_lens, "~> #{Mix.Project.config()[:version]}"}
-
-  If you do not plan to compile modules using this TypedStruct plugin at
-  runtime, you can add `runtime: false` to the dependency tuple as it is only
-  used during compilation.
-
-  ### General usage
-
-  To use this plugin in a typed struct, simply register it in the `typedstruct`
-  block:
-
-      defmodule MyStruct do
-        use TypedStruct
-
-        typedstruct do
-          # Just add this line to your struct.
-          plugin TypedStructLens
-
-          field :a_field, String.t()
-          field :other_field, atom()
-        end
-
-        @spec change(t()) :: t()
-        def change(data) do
-          # a_field/0 is generated by TypedStructLens.
-          lens = a_field()
-          put_in(data, [lens], "Changed")
-        end
-      end
-
-  ### Options
-
-  You can generate private lenses:
-
-      defmodule MyStruct do
-        use TypedStruct
-
-        typedstruct do
-          # Define private lenses instead.
-          plugin TypedStructLens, lens: :private
-
-          field :a_field, String.t()
-          # You can still make it public for a given field.
-          field :other_field, atom(), lens: :public
-        end
-      end
-
-  Conversely, you can make only a given lens private:
-
-      defmodule MyStruct do
-        use TypedStruct
-
-        typedstruct do
-          # By default lenses are public.
-          plugin TypedStructLens
-
-          field :a_field, String.t()
-          # You can still make it private for a given field.
-          field :other_field, atom(), lens: :private
-        end
-      end
-
-  To avoid naming clashes, you can also prefix or postfix the generated function
-  names:
-
-      defmodule MyStruct do
-        use TypedStruct
-
-        typedstruct do
-          # Configure a prefix and postfix.
-          plugin TypedStructLens, prefix: :demo_, postfix: :_lens
-
-          field :a_field, String.t()
-          field :other_field, atom()
-        end
-
-        @spec change(t()) :: t()
-        def change(data) do
-          # demo_a_field_lens/0 is generated by TypedStructLens instead of
-          # a_field/0.
-          lens = demo_a_field_lens()
-          put_in(data, [lens], "Changed")
-        end
-      end
-  """
+  @external_resource "README.md"
+  @moduledoc "README.md"
+             |> File.read!()
+             |> String.split("<!-- @moduledoc -->")
+             |> Enum.fetch!(1)
 
   use TypedStruct.Plugin
 
   @impl true
-  @spec field(atom(), any(), keyword()) :: Macro.t()
-  def field(name, _type, opts) do
+  @spec field(atom(), any(), keyword(), Macro.Env.t()) :: Macro.t()
+  def field(name, _type, opts, _env) do
     prefix = opts[:prefix]
     postfix = opts[:postfix]
     function_name = :"#{prefix}#{name}#{postfix}"
diff --git a/mix.exs b/mix.exs
index 6624d88..64f9522 100644
--- a/mix.exs
+++ b/mix.exs
@@ -1,7 +1,7 @@
 defmodule TypedStructLens.MixProject do
   use Mix.Project
 
-  @version "0.1.0"
+  @version "0.1.1"
   @repo_url "https://github.com/ejpcmac/typed_struct_lens"
 
   def project do
@@ -19,10 +19,17 @@ defmodule TypedStructLens.MixProject do
       preferred_cli_env: cli_env(),
 
       # Docs
+      name: "TypedStructLens",
       docs: [
-        main: "TypedStructLens",
+        main: "readme",
         source_url: @repo_url,
-        source_ref: "v#{@version}"
+        source_ref: "v#{@version}",
+        extras: [
+          "README.md": [title: "Overview"],
+          "CHANGELOG.md": [title: "Changelog"],
+          "CONTRIBUTING.md": [title: "Contributing"],
+          LICENSE: [title: "License"]
+        ]
       ],
 
       # Package
@@ -44,20 +51,20 @@ defmodule TypedStructLens.MixProject do
   defp deps do
     [
       # Development dependencies
-      {:ex_check, "~> 0.11.0", only: :dev, runtime: false},
+      {:ex_check, "~> 0.14.0", only: :dev, runtime: false},
       {:credo, "~> 1.0", only: :dev, runtime: false},
-      {:dialyxir, "~> 1.0-rc", only: :dev, runtime: false},
+      {:dialyxir, "~> 1.0", only: :dev, runtime: false},
       {:excoveralls, ">= 0.0.0", only: :test, runtime: false},
       {:mix_test_watch, ">= 0.0.0", only: :test, runtime: false},
       {:ex_unit_notifier, ">= 0.0.0", only: :test, runtime: false},
-      {:stream_data, "~> 0.4.0", only: :test},
+      {:stream_data, "~> 0.5.0", only: :test},
 
       # Project dependencies
-      {:typed_struct, "~> 0.2.0"},
-      {:lens, "~> 0.9.0"},
+      {:typed_struct, "~> 0.3.0"},
+      {:lens, "~> 1.0"},
 
       # Documentation dependencies
-      {:ex_doc, "~> 0.19", only: :docs, runtime: false}
+      {:ex_doc, ">= 0.0.0", only: :docs, runtime: false}
     ]
   end
 
@@ -102,7 +109,10 @@ defmodule TypedStructLens.MixProject do
   defp package do
     [
       licenses: ["MIT"],
-      links: %{"GitHub" => @repo_url}
+      links: %{
+        "Changelog" => "https://hexdocs.pm/typed_struct_lens/changelog.html",
+        "GitHub" => @repo_url
+      }
     ]
   end
 
@@ -112,8 +122,10 @@ defmodule TypedStructLens.MixProject do
     with {rev, 0} <-
            System.cmd("git", ["rev-parse", "--short", "HEAD"],
              stderr_to_stdout: true
-           ) do
-      "-dev+" <> String.trim(rev)
+           ),
+         {status, 0} <- System.cmd("git", ["status", "--porcelain"]) do
+      status = if status == "", do: "", else: "-dirty"
+      "-dev+" <> String.trim(rev) <> status
     else
       _ -> "-dev"
     end
diff --git a/mix.lock b/mix.lock
index fe242d6..ba8857a 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,28 +1,29 @@
 %{
   "bunt": {:hex, :bunt, "0.2.0", "951c6e801e8b1d2cbe58ebbd3e616a869061ddadcc4863d0a2182541acae9a38", [:mix], [], "hexpm", "7af5c7e09fe1d40f76c8e4f9dd2be7cebd83909f31fee7cd0e9eadc567da8353"},
-  "certifi": {:hex, :certifi, "2.5.2", "b7cfeae9d2ed395695dd8201c57a2d019c0c43ecaf8b8bcb9320b40d6662f340", [:rebar3], [{:parse_trans, "~>3.3", [hex: :parse_trans, repo: "hexpm", optional: false]}], "hexpm", "3b3b5f36493004ac3455966991eaf6e768ce9884693d9968055aeeeb1e575040"},
-  "credo": {:hex, :credo, "1.4.0", "92339d4cbadd1e88b5ee43d427b639b68a11071b6f73854e33638e30a0ea11f5", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "1fd3b70dce216574ce3c18bdf510b57e7c4c85c2ec9cad4bff854abaf7e58658"},
-  "dialyxir": {:hex, :dialyxir, "1.0.0", "6a1fa629f7881a9f5aaf3a78f094b2a51a0357c843871b8bc98824e7342d00a5", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "aeb06588145fac14ca08d8061a142d52753dbc2cf7f0d00fc1013f53f8654654"},
-  "earmark": {:hex, :earmark, "1.4.4", "4821b8d05cda507189d51f2caeef370cf1e18ca5d7dfb7d31e9cafe6688106a4", [:mix], [], "hexpm", "1f93aba7340574847c0f609da787f0d79efcab51b044bb6e242cae5aca9d264d"},
+  "certifi": {:hex, :certifi, "2.9.0", "6f2a475689dd47f19fb74334859d460a2dc4e3252a3324bd2111b8f0429e7e21", [:rebar3], [], "hexpm", "266da46bdb06d6c6d35fde799bcb28d36d985d424ad7c08b5bb48f5b5cdd4641"},
+  "credo": {:hex, :credo, "1.6.4", "ddd474afb6e8c240313f3a7b0d025cc3213f0d171879429bf8535d7021d9ad78", [:mix], [{:bunt, "~> 0.2.0", [hex: :bunt, repo: "hexpm", optional: false]}, {:file_system, "~> 0.2.8", [hex: :file_system, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "c28f910b61e1ff829bffa056ef7293a8db50e87f2c57a9b5c3f57eee124536b7"},
+  "dialyxir": {:hex, :dialyxir, "1.1.0", "c5aab0d6e71e5522e77beff7ba9e08f8e02bad90dfbeffae60eaf0cb47e29488", [:mix], [{:erlex, ">= 0.2.6", [hex: :erlex, repo: "hexpm", optional: false]}], "hexpm", "07ea8e49c45f15264ebe6d5b93799d4dd56a44036cf42d0ad9c960bc266c0b9a"},
+  "earmark_parser": {:hex, :earmark_parser, "1.4.23", "1d5f22a2802160fd454404fbf5e8f5d14cd8eb727c63701397b72d8c35267e69", [:mix], [], "hexpm", "2ec13bf14b2f4bbb4a15480970e295eede8bb01087fad6ceca27b724ab8e9d18"},
   "erlex": {:hex, :erlex, "0.2.6", "c7987d15e899c7a2f34f5420d2a2ea0d659682c06ac607572df55a43753aa12e", [:mix], [], "hexpm", "2ed2e25711feb44d52b17d2780eabf998452f6efda104877a3881c2f8c0c0c75"},
-  "ex_check": {:hex, :ex_check, "0.11.0", "6d878d9ae30d19168157bcbf346b527825284e14e77a07ec0492b19cf0036479", [:mix], [], "hexpm", "d41894aa6193f089a05e3abb43ca457e289619fcfbbdd7b60d070b7a62b26832"},
-  "ex_doc": {:hex, :ex_doc, "0.22.1", "9bb6d51508778193a4ea90fa16eac47f8b67934f33f8271d5e1edec2dc0eee4c", [:mix], [{:earmark, "~> 1.4.0", [hex: :earmark, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}], "hexpm", "d957de1b75cb9f78d3ee17820733dc4460114d8b1e11f7ee4fd6546e69b1db60"},
-  "ex_unit_notifier": {:hex, :ex_unit_notifier, "0.1.4", "36a2dcab829f506e01bf17816590680dd1474407926d43e64c1263e627c364b8", [:mix], [], "hexpm", "fddf5054dd5fd2f809e837b749570baa5c9798e11d0163921baec49b7d5762f2"},
-  "excoveralls": {:hex, :excoveralls, "0.13.0", "4e1b7cc4e0351d8d16e9be21b0345a7e165798ee5319c7800b9138ce17e0b38e", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "fe2a56c8909564e2e6764765878d7d5e141f2af3bc8ff3b018a68ee2a218fced"},
-  "file_system": {:hex, :file_system, "0.2.8", "f632bd287927a1eed2b718f22af727c5aeaccc9a98d8c2bd7bff709e851dc986", [:mix], [], "hexpm", "97a3b6f8d63ef53bd0113070102db2ce05352ecf0d25390eb8d747c2bde98bca"},
-  "hackney": {:hex, :hackney, "1.16.0", "5096ac8e823e3a441477b2d187e30dd3fff1a82991a806b2003845ce72ce2d84", [:rebar3], [{:certifi, "2.5.2", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "6.0.1", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "1.0.1", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.0", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "1.1.6", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}], "hexpm", "3bf0bebbd5d3092a3543b783bf065165fa5d3ad4b899b836810e513064134e18"},
-  "idna": {:hex, :idna, "6.0.1", "1d038fb2e7668ce41fbf681d2c45902e52b3cb9e9c77b55334353b222c2ee50c", [:rebar3], [{:unicode_util_compat, "0.5.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "a02c8a1c4fd601215bb0b0324c8a6986749f807ce35f25449ec9e69758708122"},
-  "jason": {:hex, :jason, "1.2.1", "12b22825e22f468c02eb3e4b9985f3d0cb8dc40b9bd704730efa11abd2708c44", [:mix], [{:decimal, "~> 1.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "b659b8571deedf60f79c5a608e15414085fa141344e2716fbd6988a084b5f993"},
-  "lens": {:hex, :lens, "0.9.0", "b166d4b00eb0c55a78ef76e65a4dc7ad558bdb290d774ca77059070098bfaefd", [:mix], [], "hexpm", "2f51a38444cf0a218687083ecc4735a4f54af83ccb6e65bd2c5d7f8cfdbb3b9c"},
-  "makeup": {:hex, :makeup, "1.0.2", "0b9f7bfb7a88bed961341b359bc2cc1b233517af891ba4890ec5a580ffe738b4", [:mix], [{:nimble_parsec, "~> 0.5", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "43833299231c6a6983afc75a34e43eeba638521d5527ff89809fa6372424fd7e"},
-  "makeup_elixir": {:hex, :makeup_elixir, "0.14.1", "4f0e96847c63c17841d42c08107405a005a2680eb9c7ccadfd757bd31dabccfb", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "f2438b1a80eaec9ede832b5c41cd4f373b38fd7aa33e3b22d9db79e640cbde11"},
+  "ex_check": {:hex, :ex_check, "0.14.0", "d6fbe0bcc51cf38fea276f5bc2af0c9ae0a2bb059f602f8de88709421dae4f0e", [:mix], [], "hexpm", "8a602e98c66e6a4be3a639321f1f545292042f290f91fa942a285888c6868af0"},
+  "ex_doc": {:hex, :ex_doc, "0.28.2", "e031c7d1a9fc40959da7bf89e2dc269ddc5de631f9bd0e326cbddf7d8085a9da", [:mix], [{:earmark_parser, "~> 1.4.19", [hex: :earmark_parser, repo: "hexpm", optional: false]}, {:makeup_elixir, "~> 0.14", [hex: :makeup_elixir, repo: "hexpm", optional: false]}, {:makeup_erlang, "~> 0.1", [hex: :makeup_erlang, repo: "hexpm", optional: false]}], "hexpm", "51ee866993ffbd0e41c084a7677c570d0fc50cb85c6b5e76f8d936d9587fa719"},
+  "ex_unit_notifier": {:hex, :ex_unit_notifier, "1.2.0", "73ced2ecee0f2da0705e372c21ce61e4e5d927ddb797f73928e52818b9cc1754", [:mix], [], "hexpm", "f38044c9d50de68ad7f0aec4d781a10d9f1c92c62b36bf0227ec0aaa96aee332"},
+  "excoveralls": {:hex, :excoveralls, "0.14.4", "295498f1ae47bdc6dce59af9a585c381e1aefc63298d48172efaaa90c3d251db", [:mix], [{:hackney, "~> 1.16", [hex: :hackney, repo: "hexpm", optional: false]}, {:jason, "~> 1.0", [hex: :jason, repo: "hexpm", optional: false]}], "hexpm", "e3ab02f2df4c1c7a519728a6f0a747e71d7d6e846020aae338173619217931c1"},
+  "file_system": {:hex, :file_system, "0.2.10", "fb082005a9cd1711c05b5248710f8826b02d7d1784e7c3451f9c1231d4fc162d", [:mix], [], "hexpm", "41195edbfb562a593726eda3b3e8b103a309b733ad25f3d642ba49696bf715dc"},
+  "hackney": {:hex, :hackney, "1.18.1", "f48bf88f521f2a229fc7bae88cf4f85adc9cd9bcf23b5dc8eb6a1788c662c4f6", [:rebar3], [{:certifi, "~>2.9.0", [hex: :certifi, repo: "hexpm", optional: false]}, {:idna, "~>6.1.0", [hex: :idna, repo: "hexpm", optional: false]}, {:metrics, "~>1.0.0", [hex: :metrics, repo: "hexpm", optional: false]}, {:mimerl, "~>1.1", [hex: :mimerl, repo: "hexpm", optional: false]}, {:parse_trans, "3.3.1", [hex: :parse_trans, repo: "hexpm", optional: false]}, {:ssl_verify_fun, "~>1.1.0", [hex: :ssl_verify_fun, repo: "hexpm", optional: false]}, {:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "a4ecdaff44297e9b5894ae499e9a070ea1888c84afdd1fd9b7b2bc384950128e"},
+  "idna": {:hex, :idna, "6.1.1", "8a63070e9f7d0c62eb9d9fcb360a7de382448200fbbd1b106cc96d3d8099df8d", [:rebar3], [{:unicode_util_compat, "~>0.7.0", [hex: :unicode_util_compat, repo: "hexpm", optional: false]}], "hexpm", "92376eb7894412ed19ac475e4a86f7b413c1b9fbb5bd16dccd57934157944cea"},
+  "jason": {:hex, :jason, "1.3.0", "fa6b82a934feb176263ad2df0dbd91bf633d4a46ebfdffea0c8ae82953714946", [:mix], [{:decimal, "~> 1.0 or ~> 2.0", [hex: :decimal, repo: "hexpm", optional: true]}], "hexpm", "53fc1f51255390e0ec7e50f9cb41e751c260d065dcba2bf0d08dc51a4002c2ac"},
+  "lens": {:hex, :lens, "1.0.0", "bad01a2ff90ce0e13ce486ed1750c92c06d96d271368e56771fe68d0415d4877", [:mix], [], "hexpm", "581349c3e42181696f71ead8b016cc548715eb125c41d003297dd1a670e46f21"},
+  "makeup": {:hex, :makeup, "1.1.0", "6b67c8bc2882a6b6a445859952a602afc1a41c2e08379ca057c0f525366fc3ca", [:mix], [{:nimble_parsec, "~> 1.2.2 or ~> 1.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "0a45ed501f4a8897f580eabf99a2e5234ea3e75a4373c8a52824f6e873be57a6"},
+  "makeup_elixir": {:hex, :makeup_elixir, "0.16.0", "f8c570a0d33f8039513fbccaf7108c5d750f47d8defd44088371191b76492b0b", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}, {:nimble_parsec, "~> 1.2.3", [hex: :nimble_parsec, repo: "hexpm", optional: false]}], "hexpm", "28b2cbdc13960a46ae9a8858c4bebdec3c9a6d7b4b9e7f4ed1502f8159f338e7"},
+  "makeup_erlang": {:hex, :makeup_erlang, "0.1.1", "3fcb7f09eb9d98dc4d208f49cc955a34218fc41ff6b84df7c75b3e6e533cc65f", [:mix], [{:makeup, "~> 1.0", [hex: :makeup, repo: "hexpm", optional: false]}], "hexpm", "174d0809e98a4ef0b3309256cbf97101c6ec01c4ab0b23e926a9e17df2077cbb"},
   "metrics": {:hex, :metrics, "1.0.1", "25f094dea2cda98213cecc3aeff09e940299d950904393b2a29d191c346a8486", [:rebar3], [], "hexpm", "69b09adddc4f74a40716ae54d140f93beb0fb8978d8636eaded0c31b6f099f16"},
   "mimerl": {:hex, :mimerl, "1.2.0", "67e2d3f571088d5cfd3e550c383094b47159f3eee8ffa08e64106cdf5e981be3", [:rebar3], [], "hexpm", "f278585650aa581986264638ebf698f8bb19df297f66ad91b18910dfc6e19323"},
-  "mix_test_watch": {:hex, :mix_test_watch, "1.0.2", "34900184cbbbc6b6ed616ed3a8ea9b791f9fd2088419352a6d3200525637f785", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}], "hexpm", "47ac558d8b06f684773972c6d04fcc15590abdb97aeb7666da19fcbfdc441a07"},
-  "nimble_parsec": {:hex, :nimble_parsec, "0.6.0", "32111b3bf39137144abd7ba1cce0914533b2d16ef35e8abc5ec8be6122944263", [:mix], [], "hexpm", "27eac315a94909d4dc68bc07a4a83e06c8379237c5ea528a9acff4ca1c873c52"},
-  "parse_trans": {:hex, :parse_trans, "3.3.0", "09765507a3c7590a784615cfd421d101aec25098d50b89d7aa1d66646bc571c1", [:rebar3], [], "hexpm", "17ef63abde837ad30680ea7f857dd9e7ced9476cdd7b0394432af4bfc241b960"},
+  "mix_test_watch": {:hex, :mix_test_watch, "1.1.0", "330bb91c8ed271fe408c42d07e0773340a7938d8a0d281d57a14243eae9dc8c3", [:mix], [{:file_system, "~> 0.2.1 or ~> 0.3", [hex: :file_system, repo: "hexpm", optional: false]}], "hexpm", "52b6b1c476cbb70fd899ca5394506482f12e5f6b0d6acff9df95c7f1e0812ec3"},
+  "nimble_parsec": {:hex, :nimble_parsec, "1.2.3", "244836e6e3f1200c7f30cb56733fd808744eca61fd182f731eac4af635cc6d0b", [:mix], [], "hexpm", "c8d789e39b9131acf7b99291e93dae60ab48ef14a7ee9d58c6964f59efb570b0"},
+  "parse_trans": {:hex, :parse_trans, "3.3.1", "16328ab840cc09919bd10dab29e431da3af9e9e7e7e6f0089dd5a2d2820011d8", [:rebar3], [], "hexpm", "07cd9577885f56362d414e8c4c4e6bdf10d43a8767abb92d24cbe8b24c54888b"},
   "ssl_verify_fun": {:hex, :ssl_verify_fun, "1.1.6", "cf344f5692c82d2cd7554f5ec8fd961548d4fd09e7d22f5b62482e5aeaebd4b0", [:make, :mix, :rebar3], [], "hexpm", "bdb0d2471f453c88ff3908e7686f86f9be327d065cc1ec16fa4540197ea04680"},
-  "stream_data": {:hex, :stream_data, "0.4.3", "62aafd870caff0849a5057a7ec270fad0eb86889f4d433b937d996de99e3db25", [:mix], [], "hexpm", "7dafd5a801f0bc897f74fcd414651632b77ca367a7ae4568778191fc3bf3a19a"},
-  "typed_struct": {:hex, :typed_struct, "0.2.0", "503c75208919891137f38a9f043715947fa11659b7f0c5f773bc185ebdd3f957", [:mix], [], "hexpm", "2332942218afc06a1eefed58107d9ecdd8a157d783e04ec10cf5c71d1004be19"},
-  "unicode_util_compat": {:hex, :unicode_util_compat, "0.5.0", "8516502659002cec19e244ebd90d312183064be95025a319a6c7e89f4bccd65b", [:rebar3], [], "hexpm", "d48d002e15f5cc105a696cf2f1bbb3fc72b4b770a184d8420c8db20da2674b38"},
+  "stream_data": {:hex, :stream_data, "0.5.0", "b27641e58941685c75b353577dc602c9d2c12292dd84babf506c2033cd97893e", [:mix], [], "hexpm", "012bd2eec069ada4db3411f9115ccafa38540a3c78c4c0349f151fc761b9e271"},
+  "typed_struct": {:hex, :typed_struct, "0.3.0", "939789e3c1dca39d7170c87f729127469d1315dcf99fee8e152bb774b17e7ff7", [:mix], [], "hexpm", "c50bd5c3a61fe4e198a8504f939be3d3c85903b382bde4865579bc23111d1b6d"},
+  "unicode_util_compat": {:hex, :unicode_util_compat, "0.7.0", "bc84380c9ab48177092f43ac89e4dfa2c6d62b40b8bd132b1059ecc7232f9a78", [:rebar3], [], "hexpm", "25eee6d67df61960cf6a794239566599b09e17e668d3700247bc498638152521"},
 }
diff --git a/shell.nix b/shell.nix
index bf3aa83..06b7684 100644
--- a/shell.nix
+++ b/shell.nix
@@ -4,13 +4,10 @@ with pkgs;
 
 let
   inherit (lib) optional optionals;
-
-  elixir = beam.packages.erlangR22.elixir_1_10;
-  gitflow = gitAndTools.gitflow;
 in
 
 mkShell {
-  buildInputs = [ elixir git gitflow ]
+  buildInputs = [ elixir git gitAndTools.gitflow ]
     ++ optional stdenv.isLinux libnotify # For ExUnit Notifier on Linux.
     ++ optional stdenv.isLinux inotify-tools # For file_system on Linux.
     ++ optional stdenv.isDarwin terminal-notifier # For ExUnit Notifier on macOS.