1 files changed, 4 insertions, 0 deletions
diff --git a/Gopkg.toml b/Gopkg.toml
index 9f5cb539..72eebde5 100644
--- a/Gopkg.toml
+++ b/Gopkg.toml
@@ -75,3 +75,7 @@
 [[constraint]]
   name = "github.com/xanzy/go-gitlab"
   version = "0.20.0"
+
+[[constraint]]
+  branch = "master"
+  name = "golang.org/x/sync"