diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index adff3a9..04d8945 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,9 +9,6 @@ on:
 
 name: CI
 
-env:
-  REGISTRY_IMAGE: ghcr.io/${{ github.repository }}
-
 jobs:
   build-image:
     name: Build and push image
@@ -29,6 +26,7 @@ jobs:
         run: |
           platform=${{ matrix.platform }}
           echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
+          echo "REGISTRY_IMAGE=`echo ghcr.io/${{github.repository}} | tr '[:upper:]' '[:lower:]'`" >> ${GITHUB_ENV}
 
       - name: Install Docker and start Colima on macOS
         if: matrix.os == 'macos-latest'
@@ -94,6 +92,10 @@ jobs:
     needs:
       - build-image
     steps:
+      - name: Prepare
+        run: |
+          echo "REGISTRY_IMAGE=`echo ghcr.io/${{github.repository}} | tr '[:upper:]' '[:lower:]'`" >> ${GITHUB_ENV}
+
       - name: Download digests
         uses: actions/download-artifact@v4
         with: