diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index dd59feb..b1e9be8 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"
+
       - uses: actions/setup-python@v7
         with:
           python-version: "3.11"
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
+  }
+}
diff --git a/README.md b/README.md
index 1c91858..44b7363 100644
--- a/README.md
+++ b/README.md
@@ -37,10 +37,11 @@ trivial):
 
 The value should be converted to the appropriate number of bytes for its
 assigned type. The complete internal 9-byte buffer comprises three parts:
-* _prefix byte_: a byte indicating the number of the payload bytes in the
+
+- _prefix byte_: a byte indicating the number of the payload bytes in the
   buffer;
-* _payload bytes_: the bytes holding the integer;
-* _trailing bytes_: the zero-fill bytes to complete the buffer.
+- _payload bytes_: the bytes holding the integer;
+- _trailing bytes_: the zero-fill bytes to complete the buffer.
 
 To distinguish between signed and unsigned types, the protocol introduces a
 little trick: for signed types, their _prefix byte_ value is `256` minus the
@@ -182,4 +183,4 @@ Make is optional. Run `make` or `make help` to list these commands in the termin
 
 ## Credits and references
 
-* <https://exercism.org/tracks/csharp/exercises/hyper-optimized-telemetry>
+- <https://exercism.org/tracks/csharp/exercises/hyper-optimized-telemetry>