diff --git a/.github/workflows/test_markdown-syntax.yml b/.github/workflows/test_markdown-syntax.yml
index bc683d4..24de040 100644
--- a/.github/workflows/test_markdown-syntax.yml
+++ b/.github/workflows/test_markdown-syntax.yml
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v4
 
       - name: 'Run Markdownlint'
-        uses: DavidAnson/markdownlint-cli2-action@v16
+        uses: DavidAnson/markdownlint-cli2-action@v18
         with:
           config: '.markdownlint.yml'
           globs: '**/*.md'