diff --git a/package.json b/package.json
index 949fec10e5c..c7811d69437 100644
--- a/package.json
+++ b/package.json
@@ -14,7 +14,7 @@
         "url": "https://github.com/eth-srl/UnuglifyJS"
     },
     "dependencies": {
-        "source-map" : "0.1.34",
+        "source-map" : "0.7.4",
         "yargs": "~1.3.3",
         "colors": "~1.0.3"
     },