diff --git a/apps/message-hub/wb/message-hub.yaml b/apps/message-hub/wb/message-hub.yaml
index 13d5eb0..90d8db6 100644
--- a/apps/message-hub/wb/message-hub.yaml
+++ b/apps/message-hub/wb/message-hub.yaml
@@ -172,7 +172,7 @@ spec:
 
           - name: KAFKA_SASL_MECHANISM
             value:
-              _default: "SCRAM-SHA-512"
+              _default: "PLAIN"
 
           - name: KAFKA_SSL_CAFILE
             value: