diff --git a/.github/workflows/pullrequest.yml b/.github/workflows/pullrequest.yml
index db1aef0..4c6c146 100644
--- a/.github/workflows/pullrequest.yml
+++ b/.github/workflows/pullrequest.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Fetch git repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4.1.6
         with:
           fetch-depth: 0
           path: website
@@ -28,12 +28,15 @@ jobs:
           TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Merge test branch
-        uses: linaro-its/merge-test-branch@v2.6
+        uses: linaro-its/merge-test-branch@v2.7
         with:
           path: website
 
       - name: Build site
-        run: cd ${{ github.workspace }}/website && /srv/github-action-scripts/build-astro-site.sh
+        run: |
+          source ~/.nvm/nvm.sh
+          nvm use 20
+          cd ${{ github.workspace }}/website && /srv/github-action-scripts/build-astro-site.sh
         env:
           TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
diff --git a/.github/workflows/push.yml b/.github/workflows/push.yml
index 13a86be..4be69d6 100644
--- a/.github/workflows/push.yml
+++ b/.github/workflows/push.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: self-hosted
     steps:
       - name: Fetch git repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4.1.6
         with:
           path: website
 
@@ -23,7 +23,10 @@ jobs:
         run: cat "$GITHUB_WORKSPACE/website/.github-env-${GITHUB_REF##*/}" >> $GITHUB_ENV
 
       - name: Build site
-        run: cd ${{ github.workspace }}/website && /srv/github-action-scripts/build-astro-site.sh
+        run: |
+          source ~/.nvm/nvm.sh
+          nvm use 20
+          cd ${{ github.workspace }}/website && /srv/github-action-scripts/build-astro-site.sh
 
       - name: Check links
         run: /srv/github-action-scripts/check-links.sh ${{ github.workspace }}/website/dist