diff --git a/package.json b/package.json
old mode 100755
new mode 100644
index c9811d4..bcb75e2
--- a/package.json
+++ b/package.json
@@ -123,7 +123,7 @@
     "url-loader": "^0.5.8",
     "webpack": "^3.1.0",
     "webpack-combine-loaders": "^2.0.3",
-    "webpack-dev-server": "^2.5.1",
+    "webpack-dev-server": "^3.1.6",
     "webpack-merge": "^4.1.0",
     "webpack-notifier": "^1.5.0",
     "zone.js": "^0.8.12"
@@ -802,7 +802,7 @@
     "safe-buffer": "^5.1.1",
     "ripemd160": "^2.0.1",
     "rxjs": "^5.4.2",
-    "sass-graph": "^2.2.4",
+    "sass-graph": "^3.0.3",
     "sass-loader": "^6.0.6",
     "sax": "^1.2.4",
     "scss-tokenizer": "^0.2.3",
@@ -952,7 +952,7 @@
     "webdriver-manager": "^12.0.6",
     "webpack-combine-loaders": "^2.0.3",
     "webpack-dev-middleware": "^1.11.0",
-    "webpack-dev-server": "^2.5.1",
+    "webpack-dev-server": "^3.1.6",
     "use": "^2.0.2",
     "typescript": "^2.4.1",
     "websocket-driver": "^0.6.5",