diff --git a/package.json b/package.json
index 12b20b32..9d7660f2 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "jest": "^20.0.0",
     "json-loader": "^0.5.4",
     "less": "^3.0.0",
-    "less-loader": "^4.0.3",
+    "less-loader": "^6.0.0",
     "mkdirp": "^0.5.1",
     "ncp": "^2.0.0",
     "offline-plugin": "^5.0.0",