diff --git a/.github/workflows/build-deploy-docs.yml b/.github/workflows/build-deploy-docs.yml
index 6dd9b377..e52f8a7e 100644
--- a/.github/workflows/build-deploy-docs.yml
+++ b/.github/workflows/build-deploy-docs.yml
@@ -16,7 +16,7 @@ jobs:
       - uses: Swatinem/rust-cache@v2
 
       - name: 'Validate .md files (use "just fmt-md" to fix)'
-        uses: DavidAnson/markdownlint-cli2-action@v17
+        uses: DavidAnson/markdownlint-cli2-action@v18
         with:
           config: '.github/files/config.markdownlint-cli2.jsonc'