diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index ae09167..da76d0d 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -22,7 +22,7 @@ jobs:
     - name: what changed
       id: what-changed
       run: |
-        FILES_CHANGED=$(git diff --name-only --diff-filter=AMR ${{ github.event.before }} ${{ github.event.after }} | xargs)
+        FILES_CHANGED=$(git diff --name-only --diff-filter=AMR origin/main HEAD  | xargs)
         echo "FILES_CHANGED=$FILES_CHANGED" >> $GITHUB_ENV
         if echo "$FILES_CHANGED" | grep -q 'cog.yaml'; then
             echo "cog-push=true" >> $GITHUB_OUTPUT
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 70c7d3a..e990b73 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     - name: what changed
       id: what-changed
       run: |
-        FILES_CHANGED=$(git diff --name-only --diff-filter=AMR ${{ github.event.before }} ${{ github.event.after }} | xargs)
+        FILES_CHANGED=$(git diff --name-only --diff-filter=AMR origin/main HEAD  | xargs)
         echo "FILES_CHANGED=$FILES_CHANGED" >> $GITHUB_ENV
         if echo "$FILES_CHANGED" | grep -q 'cog.yaml'; then
             echo "cog-push=true" >> $GITHUB_OUTPUT