diff --git a/package.json b/package.json
index 12b20b32..f3066081 100644
--- a/package.json
+++ b/package.json
@@ -81,7 +81,7 @@
     "script-ext-html-webpack-plugin": "^2.0.0",
     "sinon": "^4.2.1",
     "sinon-chai": "^2.9.0",
-    "source-map-loader": "^0.2.1",
+    "source-map-loader": "^1.0.0",
     "style-loader": "^0.21.0",
     "url-loader": "^1.0.0",
     "webpack": "^3.0.0",