diff --git a/.github/workflows/changelog.yml b/.github/workflows/changelog.yml
index f6c96d05..24ff4a28 100644
--- a/.github/workflows/changelog.yml
+++ b/.github/workflows/changelog.yml
@@ -29,11 +29,10 @@ jobs:
     - name: Check for updated CHANGELOG.md
       run: |
         git fetch origin ${{ github.event.pull_request.base.ref }}
-        echo "diffing HEAD"
-        git diff HEAD
-
-        echo "running git diff between HEAD and target"
-        git diff origin/${{ github.event.pull_request.base.ref }}...HEAD
+        echo "diffing HEAD and HEAD^1"
+        git diff HEAD HEAD^1
+        echo "diffing HEAD and HEAD^2"
+        git diff HEAD HEAD^2
 
         if git diff --name-only origin/${{ github.event.pull_request.base.ref }}...HEAD | grep -q 'CHANGELOG.md'; then
           echo "CHANGELOG.md has been updated."