diff --git a/.github/workflows/static.yml b/.github/workflows/static.yml
index 963cdb6..713179a 100644
--- a/.github/workflows/static.yml
+++ b/.github/workflows/static.yml
@@ -29,14 +29,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
       - name: Build the site in the jekyll/builder container
         run: |
           docker run -v ${{ github.workspace }}:/srv/jekyll -v ${{ github.workspace }}/_site:/srv/jekyll/_site jekyll/builder:latest /bin/bash -c "chmod -R 777 /srv/jekyll && jekyll build --future --trace"
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3
         with:
           path: '_site/'
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4