diff --git a/.github/workflows/markdownlint.yml b/.github/workflows/markdownlint.yml
new file mode 100644
index 0000000..4067a80
--- /dev/null
+++ b/.github/workflows/markdownlint.yml
@@ -0,0 +1,22 @@
+name: markdownlint
+
+on:
+  push:
+    paths:
+      - "**.md"
+      - ".markdownlint.json"
+  pull_request:
+    paths:
+      - "**.md"
+      - ".markdownlint.json"
+
+jobs:
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: "22"
+      - run: npm install -g markdownlint-cli2
+      - run: markdownlint-cli2 "**/*.md"