diff --git a/argocd-applications/base/metallb-application.yaml b/argocd-applications/base/metallb-application.yaml
index d456f64..c901f05 100644
--- a/argocd-applications/base/metallb-application.yaml
+++ b/argocd-applications/base/metallb-application.yaml
@@ -18,3 +18,9 @@ spec:
     automated:
       prune: true
       selfHeal: true
+  ignoreDifferences:
+    - group: apps
+      kind: CustomResourceDefinition
+      name: argo-app-metallb
+      jsonPointers:
+        - /spec/conversion/webhook/clientConfig/caBundle