diff --git a/yarn.lock b/yarn.lock
index e861d46..6abec75 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3936,23 +3936,7 @@ jest-watcher@^24.9.0:
     jest-util "^24.9.0"
     string-length "^2.0.0"
 
-jest-worker@^24.0.0:
-  version "24.0.0"
-  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.0.0.tgz#3d3483b077bf04f412f47654a27bba7e947f8b6d"
-  integrity sha512-s64/OThpfQvoCeHG963MiEZOAAxu8kHsaL/rCMF7lpdzo7vgF0CtPml9hfguOMgykgH/eOm4jFP4ibfHLruytg==
-  dependencies:
-    merge-stream "^1.0.1"
-    supports-color "^6.1.0"
-
-jest-worker@^24.6.0:
-  version "24.6.0"
-  resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.6.0.tgz#7f81ceae34b7cde0c9827a6980c35b7cdc0161b3"
-  integrity sha512-jDwgW5W9qGNvpI1tNnvajh0a5IE/PuGLFmHk6aR/BZFz8tSgGw17GsDPXAJ6p91IvYDjOw8GpFbvvZGAK+DPQQ==
-  dependencies:
-    merge-stream "^1.0.1"
-    supports-color "^6.1.0"
-
-jest-worker@^24.9.0:
+jest-worker@^24.0.0, jest-worker@^24.6.0, jest-worker@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest-worker/-/jest-worker-24.9.0.tgz#5dbfdb5b2d322e98567898238a9697bcce67b3e5"
   integrity sha512-51PE4haMSXcHohnSMdM42anbvZANYTqMrr52tVKPqqsPJMzoP6FYYDVqahX/HrAoKEKz3uUPzSvKs9A3qR4iVw==
@@ -4332,13 +4316,6 @@ merge-descriptors@1.0.1:
   resolved "https://registry.yarnpkg.com/merge-descriptors/-/merge-descriptors-1.0.1.tgz#b00aaa556dd8b44568150ec9d1b953f3f90cbb61"
   integrity sha1-sAqqVW3YtEVoFQ7J0blT8/kMu2E=
 
-merge-stream@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-1.0.1.tgz#4041202d508a342ba00174008df0c251b8c135e1"
-  integrity sha1-QEEgLVCKNCugAXQAjfDCUbjBNeE=
-  dependencies:
-    readable-stream "^2.0.1"
-
 merge-stream@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/merge-stream/-/merge-stream-2.0.0.tgz#52823629a14dd00c9770fb6ad47dc6310f2c1f60"
@@ -6044,13 +6021,13 @@ rollup-plugin-typescript2@^0.25.2:
     tslib "1.10.0"
 
 rollup-plugin-uglify@^6.0.3:
-  version "6.0.3"
-  resolved "https://registry.yarnpkg.com/rollup-plugin-uglify/-/rollup-plugin-uglify-6.0.3.tgz#e3f776171344b580bec6c6ab8888622b67099457"
-  integrity sha512-PIv3CfhZJlOG8C85N0GX+uK09TPggmAS6Nk6fpp2ELzDAV5VUhNzOURDU2j7+MwuRr0zq9IZttUTADc/jH8Gkg==
+  version "6.0.4"
+  resolved "https://registry.yarnpkg.com/rollup-plugin-uglify/-/rollup-plugin-uglify-6.0.4.tgz#65a0959d91586627f1e46a7db966fd504ec6c4e6"
+  integrity sha512-ddgqkH02klveu34TF0JqygPwZnsbhHVI6t8+hGTcYHngPkQb5MIHI0XiztXIN/d6V9j+efwHAqEL7LspSxQXGw==
   dependencies:
     "@babel/code-frame" "^7.0.0"
     jest-worker "^24.0.0"
-    serialize-javascript "^1.9.0"
+    serialize-javascript "^2.1.2"
     uglify-js "^3.4.9"
 
 rollup-pluginutils@2.8.1:
@@ -6218,10 +6195,10 @@ serialize-javascript@^1.7.0:
   resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-1.7.0.tgz#d6e0dfb2a3832a8c94468e6eb1db97e55a192a65"
   integrity sha512-ke8UG8ulpFOxO8f8gRYabHQe/ZntKlcig2Mp+8+URDP1D8vJZ0KUt7LYo07q25Z/+JVSgpr/cui9PIp5H6/+nA==
 
-serialize-javascript@^1.9.0:
-  version "1.9.1"
-  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-1.9.1.tgz#cfc200aef77b600c47da9bb8149c943e798c2fdb"
-  integrity sha512-0Vb/54WJ6k5v8sSWN09S0ora+Hnr+cX40r9F170nT+mSkaxltoE/7R3OrIdBSUv1OoiobH1QoWQbCnAO+e8J1A==
+serialize-javascript@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-2.1.2.tgz#ecec53b0e0317bdc95ef76ab7074b7384785fa61"
+  integrity sha512-rs9OggEUF0V4jUSecXazOYsLfu7OGK2qIn3c7IPBiffz32XniEp/TX9Xmc9LQfK2nQ2QKHvZ2oygKUGU0lG4jQ==
 
 serve-static@1.14.1:
   version "1.14.1"