diff --git a/package-lock.json b/package-lock.json
index be8a74b..d183f10 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1013,9 +1013,9 @@
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     },
     "browser-stdout": {
-      "version": "1.3.0",
-      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.0.tgz",
-      "integrity": "sha1-81HTKWnTL6XXpVZxVCY9korjvR8=",
+      "version": "1.3.1",
+      "resolved": "https://registry.npmjs.org/browser-stdout/-/browser-stdout-1.3.1.tgz",
+      "integrity": "sha512-qhAVI1+Av2X7qelOfAIYwXONood6XlZE/fXaBSmW/T5SzLAmCgzi+eiWE7fUvbHaeNBQH13UftjpXxsfLkMpgw==",
       "dev": true
     },
     "callsite": {
@@ -1116,9 +1116,9 @@
       }
     },
     "diff": {
-      "version": "3.3.1",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-3.3.1.tgz",
-      "integrity": "sha512-MKPHZDMB0o6yHyDryUOScqZibp914ksXwAMYMTHj6KO8UeKsRYNJD3oNCKjTqZon+V488P7N/HzXF8t7ZR95ww==",
+      "version": "3.5.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-3.5.0.tgz",
+      "integrity": "sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==",
       "dev": true
     },
     "engine.io-client": {
@@ -1570,19 +1570,20 @@
       }
     },
     "mocha": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-4.0.1.tgz",
-      "integrity": "sha512-evDmhkoA+cBNiQQQdSKZa2b9+W2mpLoj50367lhy+Klnx9OV8XlCIhigUnn1gaTFLQCa0kdNhEGDr0hCXOQFDw==",
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-5.1.1.tgz",
+      "integrity": "sha512-kKKs/H1KrMMQIEsWNxGmb4/BGsmj0dkeyotEvbrAuQ01FcWRLssUNXCEUZk6SZtyJBi6EE7SL0zDDtItw1rGhw==",
       "dev": true,
       "requires": {
-        "browser-stdout": "1.3.0",
+        "browser-stdout": "1.3.1",
         "commander": "2.11.0",
         "debug": "3.1.0",
-        "diff": "3.3.1",
+        "diff": "3.5.0",
         "escape-string-regexp": "1.0.5",
         "glob": "7.1.2",
         "growl": "1.10.3",
         "he": "1.1.1",
+        "minimatch": "3.0.4",
         "mkdirp": "0.5.1",
         "supports-color": "4.4.0"
       },
diff --git a/package.json b/package.json
index 04c508b..113ef85 100644
--- a/package.json
+++ b/package.json
@@ -29,6 +29,6 @@
     "babel-preset-es2015": "6.24.1",
     "babel-preset-stage-0": "6.24.1",
     "babel-polyfill": "6.26.0",
-    "mocha": "4.0.1"
+    "mocha": "5.1.1"
   }
 }