diff --git a/concourse/tasks/build-mvn-cache.yml b/concourse/tasks/build-mvn-cache.yml
index e88a4e90c..606a1d1df 100644
--- a/concourse/tasks/build-mvn-cache.yml
+++ b/concourse/tasks/build-mvn-cache.yml
@@ -1,8 +1,11 @@
-platform: linux
 inputs:
 - name: sts4
 outputs:
 - name: out
+platform: linux
+image_resource:
+  type: docker-image
+  source:
+    repository: kdvolder/sts4-build-env
 run:
   path: sts4/concourse/tasks/build-mvn-cache.sh
-