diff --git a/Project.toml b/Project.toml
index a96bf50c..a951a885 100644
--- a/Project.toml
+++ b/Project.toml
@@ -54,8 +54,8 @@ MacroTools = "^0.5"
 Media = "^0.5"
 OrderedCollections = "^1.1"
 Requires = "^0.5, 1.0"
+Tokenize = "=0.5.20, =0.5.21, 0.5"
 Traceur = "^0.3"
-Tokenize = "=0.5.20, =0.5.21"
 TreeViews = "^0.3.0"
 WebIO = "^0.8.1"
 WebSockets = "^1.5"