diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7a7d68d..0bb7a37 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -15,6 +15,25 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Install stylua
+        shell: bash
+        run: |
+          # To update the version of stylua refer to the releases page for the URL:
+          # https://github.com/JohnnyMorganz/StyLua/releases
+          curl -LO https://github.com/JohnnyMorganz/StyLua/releases/download/v2.0.1/stylua-linux-x86_64.zip
+          unzip stylua-linux-x86_64.zip
+          rm -rf /opt/stylua
+          mkdir -p /opt/stylua
+          mv stylua /opt/stylua
+          # Add the stylua binary to the system's path.
+          echo /opt/stylua >> ${GITHUB_PATH}
+
+      - name: Run stylua check
+        run: make testfmt
+
       - name: Install Neovim
         shell: bash
         run: |
@@ -27,10 +46,8 @@ jobs:
           # Add the nvim binary to the system's path.
           echo /opt/nvim-linux64/bin >> ${GITHUB_PATH}
 
-      - name: Check out repository code
-        uses: actions/checkout@v4
-
       - name: Run tests
+        shell: bash
         run: |
           nvim --version
           make test
diff --git a/Makefile b/Makefile
index 3a255b3..696e157 100644
--- a/Makefile
+++ b/Makefile
@@ -2,6 +2,13 @@
 test: deps/lua/test.lua
 	nvim --headless --noplugin -u ./scripts/minimal_init.lua -c "lua MiniTest.run()"
 
+# Verify all files match the configured formatting
+testfmt:
+ifeq (, $(shell which stylua))
+$(error "No stylua found. Install from: https://github.com/JohnnyMorganz/StyLua")
+endif
+	stylua --check lua/ scripts/ tests/
+
 # Formatting with https://github.com/JohnnyMorganz/StyLua
 fmt:
 ifeq (, $(shell which stylua))