diff --git a/package.json b/package.json
index 227abd224..aa6d5343f 100644
--- a/package.json
+++ b/package.json
@@ -84,7 +84,7 @@
     "resolve-from": "^2.0.0",
     "rimraf": "^2.5.0",
     "signal-exit": "^2.1.1",
-    "source-map": "^0.5.3",
+    "source-map": "^0.5.4",
     "spawn-wrap": "^1.2.1",
     "strip-bom": "^2.0.0",
     "yargs": "^4.4.0"