diff --git a/frontend/package.json b/frontend/package.json
index db079b5ca4..2bc09fdc6f 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -29,7 +29,7 @@
     "build:html": "cp public/*.html dist/.",
     "build:ico": "cp public/*.ico dist/.",
     "build:img": "cp public/*.png dist/public/.",
-    "start": "NODE_ENV=development webpack-dev-server --progress --colors --display-optimization-bailout",
+    "start": "NODE_ENV=development webpack-dev-server --progress --colors",
     "start:heroku": "UNLEASH_API=http://unleash.herokuapp.com npm run start",
     "lint": "eslint . --ext js,jsx",
     "test": "jest",
@@ -81,7 +81,7 @@
     "style-loader": "^0.18.2",
     "toolbox-loader": "0.0.3",
     "webpack": "^3.1.0",
-    "webpack-dev-server": "^2.5.1"
+    "webpack-dev-server": "^2.6.1"
   },
   "jest": {
     "moduleNameMapper": {
diff --git a/frontend/yarn.lock b/frontend/yarn.lock
index f4cda2a02a..b231965333 100644
--- a/frontend/yarn.lock
+++ b/frontend/yarn.lock
@@ -1664,7 +1664,7 @@ debug@2.6.7:
   dependencies:
     ms "2.0.0"
 
-debug@2.6.8, debug@^2.1.1, debug@^2.2.0, debug@^2.6.3, debug@^2.6.8:
+debug@2.6.8, debug@^2.1.1, debug@^2.2.0, debug@^2.6.3, debug@^2.6.6, debug@^2.6.8:
   version "2.6.8"
   resolved "https://registry.yarnpkg.com/debug/-/debug-2.6.8.tgz#e731531ca2ede27d188222427da17821d68ff4fc"
   dependencies:
@@ -3488,6 +3488,10 @@ lodash@^4.0.0, lodash@^4.14.0, lodash@^4.17.2, lodash@^4.17.4, lodash@^4.2.0, lo
   version "4.17.4"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.4.tgz#78203a4d1c328ae1d86dca6460e369b57f4055ae"
 
+loglevel@^1.4.1:
+  version "1.4.1"
+  resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.4.1.tgz#95b383f91a3c2756fd4ab093667e4309161f2bcd"
+
 longest@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/longest/-/longest-1.0.1.tgz#30a0b2da38f73770e8294a0d22e6625ed77d0097"
@@ -5066,16 +5070,16 @@ sntp@1.x.x:
   dependencies:
     hoek "2.x.x"
 
-sockjs-client@1.1.2:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/sockjs-client/-/sockjs-client-1.1.2.tgz#f0212a8550e4c9468c8cceaeefd2e3493c033ad5"
+sockjs-client@1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/sockjs-client/-/sockjs-client-1.1.4.tgz#5babe386b775e4cf14e7520911452654016c8b12"
   dependencies:
-    debug "^2.2.0"
+    debug "^2.6.6"
     eventsource "0.1.6"
     faye-websocket "~0.11.0"
     inherits "^2.0.1"
     json3 "^3.3.2"
-    url-parse "^1.1.1"
+    url-parse "^1.1.8"
 
 sockjs@0.3.18:
   version "0.3.18"
@@ -5523,7 +5527,7 @@ url-parse@1.0.x:
     querystringify "0.0.x"
     requires-port "1.0.x"
 
-url-parse@^1.1.1:
+url-parse@^1.1.8:
   version "1.1.9"
   resolved "https://registry.yarnpkg.com/url-parse/-/url-parse-1.1.9.tgz#c67f1d775d51f0a18911dd7b3ffad27bb9e5bd19"
   dependencies:
@@ -5633,9 +5637,9 @@ webpack-dev-middleware@^1.11.0:
     path-is-absolute "^1.0.0"
     range-parser "^1.0.3"
 
-webpack-dev-server@^2.5.1:
-  version "2.5.1"
-  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-2.5.1.tgz#a02e726a87bb603db5d71abb7d6d2649bf10c769"
+webpack-dev-server@^2.6.1:
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/webpack-dev-server/-/webpack-dev-server-2.6.1.tgz#0b292a9da96daf80a65988f69f87b4166e5defe7"
   dependencies:
     ansi-html "0.0.7"
     bonjour "^3.5.0"
@@ -5647,12 +5651,13 @@ webpack-dev-server@^2.5.1:
     html-entities "^1.2.0"
     http-proxy-middleware "~0.17.4"
     internal-ip "^1.2.0"
+    loglevel "^1.4.1"
     opn "4.0.2"
     portfinder "^1.0.9"
     selfsigned "^1.9.1"
     serve-index "^1.7.2"
     sockjs "0.3.18"
-    sockjs-client "1.1.2"
+    sockjs-client "1.1.4"
     spdy "^3.4.1"
     strip-ansi "^3.0.0"
     supports-color "^3.1.1"