diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fe3a0da..d4ff360 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -15,6 +15,6 @@
           fetch-depth: 0
 
       - name: Deploy docs
-        uses: mhausenblas/mkdocs-deploy-gh-pages@1.21
+        uses: mhausenblas/mkdocs-deploy-gh-pages@786c1c8c1c5ab4ceda14f1579cf417cbd6288825 #1.24
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}