diff --git a/package.json b/package.json
index dcad9aa..d00d73f 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
     "test": "mocha"
   },
   "dependencies": {
-    "source-map": "^0.5.3"
+    "source-map": "^0.5.6"
   },
   "devDependencies": {
     "browserify": "3.44.2",