diff --git a/k8s-peterg/argo-workflows/values.yaml b/k8s-peterg/argo-workflows/values.yaml
index 26b8dcf..c0b32b5 100644
--- a/k8s-peterg/argo-workflows/values.yaml
+++ b/k8s-peterg/argo-workflows/values.yaml
@@ -155,7 +155,7 @@ server:
     # -- Repository to use for the server
     repository: argoproj/argocli
     # -- Image tag for the Argo Workflows server. Defaults to `.Values.images.tag`.
-    tag: ""
+    tag: "@sha256:4bd385f07e5245fb7028923cc03fc47515623f553a7e4ffcdd66fb3009133f15"
   rbac:
     # -- Adds Role and RoleBinding for the server.
     create: true