diff --git a/.github/workflows/build-subimage.yml b/.github/workflows/build-subimage.yml
index 98e938b..138d7ba 100644
--- a/.github/workflows/build-subimage.yml
+++ b/.github/workflows/build-subimage.yml
@@ -51,4 +51,4 @@ jobs:
           tags: ${{ steps.meta.outputs.tags }}
           push: true
 
-          cache-from: quratorspk/ocrd-galley-${{ inputs.subimage }}:${{ github.sha }}
+          cache-from: quratorspk/ocrd-galley-${{ inputs.subimage }}:sha-${{ github.sha }}