diff --git a/.github/workflows/calibreapp-image-actions.yml b/.github/workflows/calibreapp-image-actions.yml
index 3b7c18bf1..485f4c9d0 100644
--- a/.github/workflows/calibreapp-image-actions.yml
+++ b/.github/workflows/calibreapp-image-actions.yml
@@ -10,16 +10,19 @@ on:
       - '**.webp'
 jobs:
   build:
+    # Only run on Pull Requests within the same repository, and not from forks.
+    if: github.event.pull_request.head.repo.full_name == github.repository
     name: calibreapp/image-actions
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Repo
-        uses: actions/checkout@master
+        uses: actions/checkout@v2
       - name: Compress Images
         id: calibre
-        uses: calibreapp/image-actions@master
+        uses: calibreapp/image-actions@1.1.0
         with:
           githubToken: ${{ secrets.GITHUB_TOKEN }}
+          ignorePaths: 'app/src/test'
           compressOnly: true
       - name: Create New Pull Request If Needed
         if: steps.calibre.outputs.markdown != ''