diff --git a/package.json b/package.json
index d2b6a386e..dcfd44c99 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "season": "0.13.0",
     "semver": "1.1.4",
     "space-pen": "1.3.0",
-    "tantamount": "0.3.0",
+    "tantamount": "0.5.0",
     "telepath": "0.8.1",
     "temp": "0.5.0",
     "underscore": "1.4.4",