diff --git a/.github/workflows/conformance.yaml b/.github/workflows/conformance.yaml
index eb0069fc20..1c23783c4f 100644
--- a/.github/workflows/conformance.yaml
+++ b/.github/workflows/conformance.yaml
@@ -26,7 +26,7 @@ jobs:
         id: upgrades
         run: |
           set -e
-          if [[ ${{ github.event_name }} == 'pull_request' ]]; then
+          if [[ ${{ github.event_name }} == 'schedule' ]]; then
             echo 'upgrades=["latest","minor","patch"]' >> $GITHUB_OUTPUT
           else
             echo 'upgrades=["none"]' >> $GITHUB_OUTPUT