diff --git a/module.json b/module.json
index 4b405121..31a4cf64 100644
--- a/module.json
+++ b/module.json
@@ -36,7 +36,7 @@
     "minar": "^1.0.0",
     "core-util": "^1.0.0",
     "compiler-polyfill": "^1.1.0",
-    "greentea-client": "~0.1.4"
+    "greentea-client": ">=0.1.4,<2.0.0"
   },
   "testDependencies": {
     "unity": "^2.0.0"