diff --git a/docker/.env.example b/docker/.env.example
index e8ec246ae2..cf773e3cc3 100644
--- a/docker/.env.example
+++ b/docker/.env.example
@@ -922,7 +922,3 @@ CREATE_TIDB_SERVICE_JOB_ENABLED=false
 
 # Maximum number of submitted thread count in a ThreadPool for parallel node execution
 MAX_SUBMIT_COUNT=100
-
-# Proxy
-HTTP_PROXY=
-HTTPS_PROXY=