diff --git a/.github/workflows/generic_build.yml b/.github/workflows/generic_build.yml
index 67542b9c..9fd23e6b 100644
--- a/.github/workflows/generic_build.yml
+++ b/.github/workflows/generic_build.yml
@@ -7,6 +7,11 @@ on:
         required: false
         type: string
         default: linux/amd64
+    outputs:
+      build-cache-key:
+        description: The cache key to use when restoring an image later
+        value: ${{ jobs.build-image.outputs.build-cache-key }}
+
 
 permissions:
   contents: read