diff --git a/infra/argocd/templates/longhorn.yaml b/infra/argocd/templates/longhorn.yaml
index 4d9c9f0..3de3059 100644
--- a/infra/argocd/templates/longhorn.yaml
+++ b/infra/argocd/templates/longhorn.yaml
@@ -16,6 +16,12 @@ spec:
     automated:
       prune: true
       selfHeal: true
+    ignoreDifferences:
+      - group: apiextensions.k8s.io
+        name: engineimages.longhorn.io
+        kind: CustomResourceDefinition
+        jsonPointers:
+          - /spec/preserveUnknownFields
     syncOptions:
       - CreateNamespace=true