diff --git a/.github/workflows/compress-images-on-pull-request.yml b/.github/workflows/compress-images-on-pull-request.yml
index 5790389b..10b6b8c6 100644
--- a/.github/workflows/compress-images-on-pull-request.yml
+++ b/.github/workflows/compress-images-on-pull-request.yml
@@ -1,5 +1,8 @@
 name: Compress images
 on: pull_request
+  paths:
+    - '**.jpg'
+    - '**.png'
 jobs:
   build:
     name: calibreapp/image-actions