diff --git a/package.json b/package.json
index 735618e20d..7b7855359d 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "ghooks": "^1.3.2",
     "git-update-ghpages": "1.3.0",
     "isexe": "1.1.2",
-    "istanbul": "^0.4.4",
+    "istanbul": "^0.4.5",
     "ncp": "^2.0.0",
     "nixt": "0.5.0",
     "sepia": "2.0.1",