diff --git a/Makefile b/Makefile
index 3d35592738556f38fba559fc7efef35b463bf0b2..59707a774411d91de38b153df4c88258037675a2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+.NOTPARALLEL:
+
 gitlab_repo = https://gitlab.com/gitlab-org/gitlab-ce.git
 gitlab_shell_repo = https://gitlab.com/gitlab-org/gitlab-shell.git
 gitlab_shell_clone_dir = go-gitlab-shell/src/gitlab.com/gitlab-org/gitlab-shell