diff --git a/tests.sh b/tests.sh
index 92d527fae4b317d3249e7ab8bbef2eb2365d053c..b804afb84e8fe3100a46baf00518475083706d4a 100644
--- a/tests.sh
+++ b/tests.sh
@@ -27,7 +27,7 @@ frontend_test() {
 
 server_test() {
     cd $cur/server
-    sh build.sh
+    bash build.sh
     cd $cur/server/visualdl
     python lib_test.py
 }