diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 28a2c86..4f95f15 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -22,9 +22,9 @@ jobs:
       - run: npm run build:docs
 
       - name: 'Upload Pages artifact'
-        uses: 'actions/upload-pages-artifact@v3'
+        uses: 'actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa' # v3
         with:
           path: 'docs/'
 
       - name: 'Deploy documentation to GitHub Pages'
-        uses: 'actions/deploy-pages@v4'
+        uses: 'actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e' # v4