diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index f4a77e1..4644b97 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -13,6 +13,11 @@ jobs:
     steps:
       - uses: actions/checkout@v7
 
+      - name: Lint Markdown
+        uses: DavidAnson/markdownlint-cli2-action@v23
+        with:
+          globs: "**/*.md"
+
       - name: Check formatting
         run: make format-check
 
diff --git a/.markdownlint.json b/.markdownlint.json
new file mode 100644
index 0000000..2bf8ad4
--- /dev/null
+++ b/.markdownlint.json
@@ -0,0 +1,8 @@
+{
+  "MD013": {
+    "line_length": 100
+  },
+  "MD024": {
+    "siblings_only": true
+  }
+}