diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 56cef56..64797e2 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -34,6 +34,8 @@ jobs:
     container: { image: 'ghcr.io/mff-cuni-cz/cuni-thesis-validator' }
 
     steps:
+      - name: Install nodejs
+        run: apt-get update && apt-get install -y nodejs
       - name: Get PDFs
         uses: actions/download-artifact@v3
       - name: Run VeraPDF