diff --git a/.github/workflows/release-tarball.yml b/.github/workflows/release-tarball.yml
index f5ac14b2..93571350 100644
--- a/.github/workflows/release-tarball.yml
+++ b/.github/workflows/release-tarball.yml
@@ -37,6 +37,9 @@ jobs:
       env:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+    - name: Build PDF documentation
+      run: make pdf    
+
     - name: Upload Release PDF documentation
       uses: actions/upload-release-asset@v1
       with: