diff --git a/docker-compose.yml b/docker-compose.yml
index 7a115845e4..ea476dbb54 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -263,7 +263,7 @@ services:
       context: ./src/featureflagservice
     ports:
       - "${FEATURE_FLAG_SERVICE_PORT}:${FEATURE_FLAG_SERVICE_PORT}"
-      - "${FEATURE_FLAG_GRPC_SERVICE_PORT}"
+      - "${FEATURE_FLAG_GRPC_SERVICE_PORT}:${FEATURE_FLAG_GRPC_SERVICE_PORT}"
     environment:
       - FEATURE_FLAG_SERVICE_PORT
       - FEATURE_FLAG_GRPC_SERVICE_PORT