diff --git a/package-lock.json b/package-lock.json
index 79f447e..b914b7c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3014,17 +3014,17 @@
       }
     },
     "chai": {
-      "version": "4.1.2",
-      "resolved": "https://registry.npmjs.org/chai/-/chai-4.1.2.tgz",
-      "integrity": "sha1-D2RYS6ZC8PKs4oBiefTwbKI61zw=",
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-4.2.0.tgz",
+      "integrity": "sha512-XQU3bhBukrOsQCuwZndwGcCVQHyZi53fQ6Ys1Fym7E4olpIqqZZhhoFJoaKVvV17lWQoXYwgWN2nF5crA8J2jw==",
       "dev": true,
       "requires": {
-        "assertion-error": "^1.0.1",
-        "check-error": "^1.0.1",
-        "deep-eql": "^3.0.0",
+        "assertion-error": "^1.1.0",
+        "check-error": "^1.0.2",
+        "deep-eql": "^3.0.1",
         "get-func-name": "^2.0.0",
-        "pathval": "^1.0.0",
-        "type-detect": "^4.0.0"
+        "pathval": "^1.1.0",
+        "type-detect": "^4.0.5"
       }
     },
     "chalk": {
diff --git a/package.json b/package.json
index 3b8df5a..4003599 100644
--- a/package.json
+++ b/package.json
@@ -80,7 +80,7 @@
     "babel-register": "^6.24.1",
     "babili-webpack-plugin": "^0.1.2",
     "cfonts": "^2.4.5",
-    "chai": "^4.0.0",
+    "chai": "^4.2.0",
     "chalk": "^2.1.0",
     "copy-webpack-plugin": "^5.0.5",
     "cross-env": "^5.0.5",