diff --git a/package-lock.json b/package-lock.json
index 29024916..bdea99a6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -2355,9 +2355,9 @@
       }
     },
     "compressible": {
-      "version": "2.0.11",
-      "resolved": "https://registry.npmjs.org/compressible/-/compressible-2.0.11.tgz",
-      "integrity": "sha1-FnGKdd4oPtjmBAQWJaIGRYZ5fYo=",
+      "version": "2.0.12",
+      "resolved": "https://registry.npmjs.org/compressible/-/compressible-2.0.12.tgz",
+      "integrity": "sha1-xZpcmdt2dn6YdlAOJx72OzSTvWY=",
       "dev": true,
       "requires": {
         "mime-db": "1.30.0"
@@ -2371,7 +2371,7 @@
       "requires": {
         "accepts": "1.3.4",
         "bytes": "3.0.0",
-        "compressible": "2.0.11",
+        "compressible": "2.0.12",
         "debug": "2.6.9",
         "on-headers": "1.0.1",
         "safe-buffer": "5.1.1",
@@ -6637,6 +6637,12 @@
       "integrity": "sha1-MzCvdWyralQnAMZLLk5KoGLVL/8=",
       "dev": true
     },
+    "killable": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/killable/-/killable-1.0.0.tgz",
+      "integrity": "sha1-2ouEvUfeU5WHj5XWTQLyRJ/gXms=",
+      "dev": true
+    },
     "kind-of": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/kind-of/-/kind-of-3.2.2.tgz",
@@ -11535,7 +11541,7 @@
         "faye-websocket": "0.11.1",
         "inherits": "2.0.3",
         "json3": "3.3.2",
-        "url-parse": "1.1.9"
+        "url-parse": "1.2.0"
       },
       "dependencies": {
         "faye-websocket": {
@@ -12445,9 +12451,9 @@
       }
     },
     "url-parse": {
-      "version": "1.1.9",
-      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.1.9.tgz",
-      "integrity": "sha1-xn8dd11R8KGJEd17P/rSe7nlvRk=",
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/url-parse/-/url-parse-1.2.0.tgz",
+      "integrity": "sha512-DT1XbYAfmQP65M/mE6OALxmXzZ/z1+e5zk2TcSKe/KiYbNGZxgtttzC0mR/sjopbpOXcbniq7eIKmocJnUWlEw==",
       "dev": true,
       "requires": {
         "querystringify": "1.0.0",
@@ -12906,9 +12912,9 @@
       }
     },
     "webpack-dev-server": {
-      "version": "2.9.3",
-      "resolved": "https://registry.npmjs.org/webpack-dev-server/-/webpack-dev-server-2.9.3.tgz",
-      "integrity": "sha512-bwq7sj452FRH+oVfgOA8xXKkLYPTNsYB4dQ0Jhz3ydjNJ9MvhpGJtehFW8Z0cEcwNkRRiF4aYbReiSGQ4pbS1w==",
+      "version": "2.9.4",
+      "resolved": "https://registry.npmjs.org/webpack-dev-server/-/webpack-dev-server-2.9.4.tgz",
+      "integrity": "sha512-thrqC0EQEoSjXeYgP6pUXcUCZ+LNrKsDPn+mItLnn5VyyNZOJKd06hUP5vqkYwL8nWWXsii0loSF9NHNccT6ow==",
       "dev": true,
       "requires": {
         "ansi-html": "0.0.7",
@@ -12925,6 +12931,7 @@
         "import-local": "0.1.1",
         "internal-ip": "1.2.0",
         "ip": "1.1.5",
+        "killable": "1.0.0",
         "loglevel": "1.5.1",
         "opn": "5.1.0",
         "portfinder": "1.0.13",
diff --git a/package.json b/package.json
index f90f0947..f2ad5f1f 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "sinon": "4.0.1",
     "uglify-js": "3.1.5",
     "webpack": "3.8.1",
-    "webpack-dev-server": "2.9.3"
+    "webpack-dev-server": "2.9.4"
   },
   "peerDependencies": {},
   "dependencies": {