diff --git a/.github/workflows/build-documentation.yml b/.github/workflows/build-documentation.yml
index ceb9201519..93bf96e467 100644
--- a/.github/workflows/build-documentation.yml
+++ b/.github/workflows/build-documentation.yml
@@ -25,7 +25,7 @@ jobs:
           echo "::set-output name=default_ref::${{ format('refs/heads/{0}', github.event.repository.default_branch) }}"
 
       - name: Run Doxygen
-        uses: mattnotmitt/doxygen-action@v1
+        uses: mattnotmitt/doxygen-action@1.9.4
         with:
           doxyfile-path: 'doxygen-public.conf'