diff --git a/docker/.env.example b/docker/.env.example
index 3bc79059dc..5d84b176ca 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -235,6 +235,7 @@ REDIS_USERNAME=
 REDIS_PASSWORD=difyai123456
 REDIS_USE_SSL=false
 REDIS_DB=0
+REDIS_KEY_PREFIX=
 
 # Whether to use Redis Sentinel mode.
 # If set to true, the application will automatically discover and connect to the master node through Sentinel.