diff --git a/poetry.lock b/poetry.lock
index e37376c2..efe44385 100644
--- a/poetry.lock
+++ b/poetry.lock
@@ -143,14 +143,17 @@ python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
 
 [[package]]
 name = "coverage"
-version = "5.5"
+version = "6.0.2"
 description = "Code coverage measurement for Python"
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4"
+python-versions = ">=3.6"
+
+[package.dependencies]
+tomli = {version = "*", optional = true, markers = "extra == \"toml\""}
 
 [package.extras]
-toml = ["toml"]
+toml = ["tomli"]
 
 [[package]]
 name = "distlib"
@@ -525,16 +528,15 @@ testing = ["argcomplete", "hypothesis (>=3.56)", "mock", "nose", "requests", "xm
 
 [[package]]
 name = "pytest-cov"
-version = "2.12.1"
+version = "3.0.0"
 description = "Pytest plugin for measuring coverage."
 category = "dev"
 optional = false
-python-versions = ">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*"
+python-versions = ">=3.6"
 
 [package.dependencies]
-coverage = ">=5.2.1"
+coverage = {version = ">=5.2.1", extras = ["toml"]}
 pytest = ">=4.6"
-toml = "*"
 
 [package.extras]
 testing = ["fields", "hunter", "process-tests", "six", "pytest-xdist", "virtualenv"]
@@ -765,7 +767,7 @@ docs = ["mkdocs", "mkapi"]
 [metadata]
 lock-version = "1.1"
 python-versions = "^3.7"
-content-hash = "1b56c93e93380582c480b2f207274d75f2cdc8eca1d5cde8340866c2894539ab"
+content-hash = "6487566b8d9c46985989d2f6477d01f6f3204b7e974c37dc9040094284c05397"
 
 [metadata.files]
 appdirs = [
@@ -817,58 +819,39 @@ colorama = [
     {file = "colorama-0.4.4.tar.gz", hash = "sha256:5941b2b48a20143d2267e95b1c2a7603ce057ee39fd88e7329b0c292aa16869b"},
 ]
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@@ -1072,8 +1055,8 @@ pytest = [
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-    {file = "pytest-cov-2.12.1.tar.gz", hash = "sha256:261ceeb8c227b726249b376b8526b600f38667ee314f910353fa318caa01f4d7"},
-    {file = "pytest_cov-2.12.1-py2.py3-none-any.whl", hash = "sha256:261bb9e47e65bd099c89c3edf92972865210c36813f80ede5277dceb77a4a62a"},
+    {file = "pytest-cov-3.0.0.tar.gz", hash = "sha256:e7f0f5b1617d2210a2cabc266dfe2f4c75a8d32fb89eafb7ad9d06f6d076d470"},
+    {file = "pytest_cov-3.0.0-py3-none-any.whl", hash = "sha256:578d5d15ac4a25e5f961c938b85a05b09fdaae9deef3bb6de9a6e766622ca7a6"},
 ]
 pytest-mock = [
     {file = "pytest-mock-3.6.1.tar.gz", hash = "sha256:40217a058c52a63f1042f0784f62009e976ba824c418cced42e88d5f40ab0e62"},
diff --git a/pyproject.toml b/pyproject.toml
index 466d6391..844336d8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -44,7 +44,7 @@ tox-pyenv = "^1.1.0"
 pytest-mock = "^3.6.1"
 flake8 = "^4.0.0"
 mypy = "^0.910"
-pytest-cov = "^2.12.1"
+pytest-cov = "^3.0.0"
 bandit = "^1.7.0"
 black = "^21.7b0"
 pre-commit = "^2.12.1"