diff --git a/package.json b/package.json
index fcd2bd9..af179e7 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "gulp-6to5": "^3.0.0",
     "gulp-rename": "^1.2.0",
     "gulp-run": "^1.6.6",
-    "gulp-sourcemaps": "^1.3.0",
+    "gulp-sourcemaps": "^2.5.0",
     "gulp-watch": "^4.1.0",
     "prova": "^3.0.0"
   },