diff --git a/.github/workflows/compatibility.yml b/.github/workflows/compatibility.yml
index 01635198f..07e1314ce 100644
--- a/.github/workflows/compatibility.yml
+++ b/.github/workflows/compatibility.yml
@@ -13,14 +13,18 @@ jobs:
   prepare:
     runs-on: ubuntu-latest
     outputs:
-      versions: ${{ steps.parser.outputs.versions }}
+      versions: ${{ steps.parser.outputs.versions || '[]' }}
     steps:
       - uses: actions/checkout@v6
+        with:
+          fetch-depth: 2
 
       - name: Check license line changed
         id: check
         run: |
-          if git diff HEAD~1 HEAD -- pyproject.toml | grep -q '^[+-].*license = "Apache-2.0"'; then
+          if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
+            echo "changed=true" >> "$GITHUB_OUTPUT"
+          elif git diff HEAD~1 HEAD -- pyproject.toml | grep -q '^[+-].*license = "Apache-2.0"'; then
             echo "changed=true" >> "$GITHUB_OUTPUT"
           else
             echo "changed=false" >> "$GITHUB_OUTPUT"
@@ -35,11 +39,13 @@ jobs:
         if: steps.check.outputs.changed == 'true'
         id: parser
         run: |
-          versions=$(python ci_loop_versions.py setuptools ">=77.0.1,<83")
+          python -m pip install --upgrade requests packaging
+          versions=$(python .github/scripts/ci_loop_versions.py setuptools ">=77.0.1,<83")
           echo "versions=$versions" >> "$GITHUB_OUTPUT"
 
   check:
     needs: prepare
+    if: needs.prepare.outputs.versions != '[]'
     runs-on: ubuntu-latest
     strategy:
       fail-fast: false