diff --git a/.tekton/pipeline-ref.yaml b/.tekton/pipeline-ref.yaml
index 9d2fc49b..c9fddc4b 100644
--- a/.tekton/pipeline-ref.yaml
+++ b/.tekton/pipeline-ref.yaml
@@ -253,6 +253,8 @@ spec:
 
   - name: build-source-image
     params:
+    - name: BASE_IMAGES
+      value: $(tasks.build-image-index.results.IMAGE_URL)
     - name: BINARY_IMAGE
       value: $(params.output-image)
     - name: SOURCE_ARTIFACT