diff --git a/.github/workflows/build-service-images.yml b/.github/workflows/build-service-images.yml
index f323ab4..099e242 100644
--- a/.github/workflows/build-service-images.yml
+++ b/.github/workflows/build-service-images.yml
@@ -29,15 +29,15 @@ on:
 
       node_builder_image:
         type: string
-        default: ""
+        default: "ghcr.io/cloud-neutral-toolkit/node-builder:latest"
 
       node_runtime_image:
         type: string
-        default: ""
+        default: "ghcr.io/cloud-neutral-toolkit/node-runtime:latest"
 
       go_runtime_image:
         type: string
-        default: ""
+        default: "ghcr.io/cloud-neutral-toolkit/go-runtime:latest"
 
   push:
     branches: [ main ]