diff --git a/package-lock.json b/package-lock.json
index 6f68959..4548374 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,48 +12,48 @@
         "font-awesome": "^4.7.0"
       },
       "devDependencies": {
-        "@babel/core": "latest",
-        "@babel/polyfill": "latest",
-        "@babel/preset-env": "latest",
-        "autoprefixer": "latest",
-        "babel-loader": "latest",
-        "chai": "latest",
-        "cssnano": "latest",
-        "eyeglass": "latest",
-        "gulp": "latest",
-        "gulp-file": "latest",
-        "gulp-hub": "latest",
-        "gulp-if": "latest",
-        "gulp-jshint": "latest",
-        "gulp-jshint-jslint-file-reporter": "latest",
-        "gulp-postcss": "latest",
-        "gulp-sass": "latest",
-        "gulp-sourcemaps": "latest",
-        "istanbul-instrumenter-loader": "latest",
-        "jsdom": "latest",
-        "jsdom-global": "latest",
-        "jshint": "latest",
-        "jshint-stylish": "latest",
-        "karma": "latest",
-        "karma-chrome-launcher": "latest",
-        "karma-coverage": "latest",
-        "karma-firefox-launcher": "latest",
-        "karma-junit-reporter": "latest",
-        "karma-mocha": "latest",
-        "karma-phantomjs-launcher": "latest",
-        "karma-spec-reporter": "latest",
-        "karma-webpack": "latest",
-        "mocha": "latest",
-        "postcss-loader": "latest",
-        "postcss-selector-lint": "latest",
-        "sass-loader": "latest",
-        "simulant": "latest",
-        "sinon": "latest",
-        "url-loader": "latest",
-        "webpack": "latest",
-        "webpack-dev-server": "latest",
-        "webpack-stream": "latest",
-        "yargs": "latest"
+        "@babel/core": "*",
+        "@babel/polyfill": "*",
+        "@babel/preset-env": "*",
+        "autoprefixer": "*",
+        "babel-loader": "*",
+        "chai": "*",
+        "cssnano": "*",
+        "eyeglass": "*",
+        "gulp": "*",
+        "gulp-file": "*",
+        "gulp-hub": "*",
+        "gulp-if": "*",
+        "gulp-jshint": "*",
+        "gulp-jshint-jslint-file-reporter": "*",
+        "gulp-postcss": "*",
+        "gulp-sass": "*",
+        "gulp-sourcemaps": "*",
+        "istanbul-instrumenter-loader": "*",
+        "jsdom": "*",
+        "jsdom-global": "*",
+        "jshint": "*",
+        "jshint-stylish": "*",
+        "karma": "*",
+        "karma-chrome-launcher": "*",
+        "karma-coverage": "*",
+        "karma-firefox-launcher": "*",
+        "karma-junit-reporter": "*",
+        "karma-mocha": "*",
+        "karma-phantomjs-launcher": "*",
+        "karma-spec-reporter": "*",
+        "karma-webpack": "*",
+        "mocha": "*",
+        "postcss-loader": "*",
+        "postcss-selector-lint": "*",
+        "sass-loader": "*",
+        "simulant": "*",
+        "sinon": "*",
+        "url-loader": "*",
+        "webpack": "*",
+        "webpack-dev-server": "*",
+        "webpack-stream": "*",
+        "yargs": "*"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -4369,9 +4369,9 @@
       }
     },
     "node_modules/engine.io": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.1.1.tgz",
-      "integrity": "sha512-t2E9wLlssQjGw0nluF6aYyfX8LwYU8Jj0xct+pAhfWfv/YrBn6TSNtEYsgxHIfaMqfrLx07czcMg9bMN6di+3w==",
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.1.2.tgz",
+      "integrity": "sha512-t5z6zjXuVLhXDMiFJPYsPOWEER8B0tIsD3ETgw19S1yg9zryvUfY3Vhtk3Gf4sihw/bQGIqQ//gjvVlu+Ca0bQ==",
       "dev": true,
       "dependencies": {
         "accepts": "~1.3.4",
@@ -20500,9 +20500,9 @@
       }
     },
     "engine.io": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.1.1.tgz",
-      "integrity": "sha512-t2E9wLlssQjGw0nluF6aYyfX8LwYU8Jj0xct+pAhfWfv/YrBn6TSNtEYsgxHIfaMqfrLx07czcMg9bMN6di+3w==",
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/engine.io/-/engine.io-4.1.2.tgz",
+      "integrity": "sha512-t5z6zjXuVLhXDMiFJPYsPOWEER8B0tIsD3ETgw19S1yg9zryvUfY3Vhtk3Gf4sihw/bQGIqQ//gjvVlu+Ca0bQ==",
       "dev": true,
       "requires": {
         "accepts": "~1.3.4",