diff --git a/package.json b/package.json
index 63e1c3419..2f076c528 100644
--- a/package.json
+++ b/package.json
@@ -55,7 +55,7 @@
     "esprint": "0.4.0",
     "extract-text-webpack-plugin": "3.0.2",
     "file-loader": "2.0.0",
-    "filesize": "3.6.1",
+    "filesize": "4.1.2",
     "gulp": "3.9.1",
     "gulp-cached": "1.1.1",
     "gulp-concat": "2.6.1",
diff --git a/yarn.lock b/yarn.lock
index a0b2bae85..853fe492f 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3366,10 +3366,10 @@ filename-regex@^2.0.0:
   resolved "https://registry.yarnpkg.com/filename-regex/-/filename-regex-2.0.1.tgz#c1c4b9bee3e09725ddb106b75c1e301fe2f18b26"
   integrity sha1-wcS5vuPglyXdsQa3XB4wH+LxiyY=
 
-filesize@3.6.1:
-  version "3.6.1"
-  resolved "https://registry.yarnpkg.com/filesize/-/filesize-3.6.1.tgz#090bb3ee01b6f801a8a8be99d31710b3422bb317"
-  integrity sha512-7KjR1vv6qnicaPMi1iiTcI85CyYwRO/PSFCu6SvqL8jN2Wjt/NIYQTFtFs7fSDCYOstUkEWIQGFUg5YZQfjlcg==
+filesize@4.1.2:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/filesize/-/filesize-4.1.2.tgz#fcd570af1353cea97897be64f56183adb995994b"
+  integrity sha512-iSWteWtfNcrWQTkQw8ble2bnonSl7YJImsn9OZKpE2E4IHhXI78eASpDYUljXZZdYj36QsEKjOs/CsiDqmKMJw==
 
 fill-range@^2.1.0:
   version "2.2.4"