diff --git a/environments/fips.yaml b/environments/fips.yaml
index a8320296d7..bc855310b5 100644
--- a/environments/fips.yaml
+++ b/environments/fips.yaml
@@ -7,3 +7,6 @@ parameter_defaults:
 
   # Add RabbitAdditionalErlArgs for FIPS
   RabbitFIPS: true
+
+  # Override gcomm_cipher for FIPS
+  MysqlGaleraSSLCipher: 'ECDHE-RSA-AES256-GCM-SHA384'