diff --git a/Jenkinsfile b/Jenkinsfile
index 2faa871..758057b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -31,7 +31,7 @@ pipeline{
         sh '''
         printenv
         # git submodule init
-        git submodule update --init
+        git submodule update --init --depth 1
         cd poky
         source oe-init-build-env ../build
         bitbake core-image-base