diff --git a/charts/app-of-apps/templates/datagovuk-application.yaml b/charts/app-of-apps/templates/datagovuk-application.yaml
index 6bdd560..5139e60 100644
--- a/charts/app-of-apps/templates/datagovuk-application.yaml
+++ b/charts/app-of-apps/templates/datagovuk-application.yaml
@@ -8,7 +8,7 @@ spec:
   source:
     repoURL: https://github.com/alphagov/govuk-dgu-charts
     path: charts/datagovuk
-    targetRevision: HEAD
+    targetRevision: test-find-arm
     helm:
       values: |
         {{- toYaml .Values.datagovukHelmValues | nindent 8 }}