diff --git a/.env b/.env
index bcb772c2de..3299802e25 100644
--- a/.env
+++ b/.env
@@ -2,4 +2,5 @@ REPO=milvusdb/milvus-dev
 MILVUS_INSTALL_PREFIX=/var/lib/milvus
 ARCH=amd64
 UBUNTU=18.04
+CENTOS=7
 CUDA=10.1
\ No newline at end of file