diff --git a/argocd/apps/mastodon.yaml b/argocd/apps/mastodon.yaml
index e12f28e..c56853b 100644
--- a/argocd/apps/mastodon.yaml
+++ b/argocd/apps/mastodon.yaml
@@ -117,10 +117,6 @@ spec:
             tls: true
             preset: small_cluster
             existingSecret: mastodon-os
-            caSecret:
-              name: os-ca
-              key: ca.crt
-              mountPath: /etc/ssl/certs/os-ca.crt
 
           ingress:
             enabled: true