diff --git a/tests/package.json b/tests/package.json
index 47ed841d7e..e63b4ca040 100644
--- a/tests/package.json
+++ b/tests/package.json
@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "chai": "^2.3.0",
-    "mailcomposer": "^0.2.12",
+    "mailcomposer": "^4.0.2",
     "mailparser": "0.5.1",
     "simplesmtp": "0.3.35",
     "spacejam": "1.2.2",