diff --git a/cmake/external/grpc.cmake b/cmake/external/grpc.cmake
index 4b6840578fd155027c895b6ed5d1f9133868f312..ffdf91a354bd92bdaf3f88344f0a9256638b568c 100644
--- a/cmake/external/grpc.cmake
+++ b/cmake/external/grpc.cmake
@@ -45,6 +45,7 @@ ExternalProject_Add(
     #    checkout and clean other dirs under third_party
     # 4. remove .git, and package the directory.
     URL "http://paddlepaddledeps.bj.bcebos.com/grpc-v1.8.x.tar.gz"
+    URL_MD5  "c9c58ee7d0e8929a63155af6a2ecdbd0"
     PREFIX          ${GRPC_SOURCES_DIR}
     UPDATE_COMMAND  ""
     CONFIGURE_COMMAND ""