diff --git a/yarn.lock b/yarn.lock
index 73e508d..660b53d 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1886,10 +1886,6 @@
     source-map "~0.6.1"
     vue-template-es2015-compiler "^1.9.0"
 
-"@vuepress-reco/vuepress-plugin-extract-code@1.0.3":
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/@vuepress-reco/vuepress-plugin-extract-code/-/vuepress-plugin-extract-code-1.0.3.tgz#aed545a2ef13f52d92c1c904efc2225c89b99d2c"
-
 "@vuepress/core@^1.4.0":
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/@vuepress/core/-/core-1.4.0.tgz#a9b09a2615b1f0bf183541d22e69a126b8220f16"
@@ -2752,13 +2748,14 @@ browserify-zlib@^0.2.0:
     pako "~1.0.5"
 
 browserslist@^4.0.0, browserslist@^4.11.0, browserslist@^4.8.3, browserslist@^4.9.1:
-  version "4.11.1"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.11.1.tgz#92f855ee88d6e050e7e7311d987992014f1a1f1b"
+  version "4.16.6"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.16.6.tgz#d7901277a5a88e554ed305b183ec9b0c08f66fa2"
   dependencies:
-    caniuse-lite "^1.0.30001038"
-    electron-to-chromium "^1.3.390"
-    node-releases "^1.1.53"
-    pkg-up "^2.0.0"
+    caniuse-lite "^1.0.30001219"
+    colorette "^1.2.2"
+    electron-to-chromium "^1.3.723"
+    escalade "^3.1.1"
+    node-releases "^1.1.71"
 
 btoa-lite@^1.0.0:
   version "1.0.0"
@@ -2950,9 +2947,9 @@ caniuse-api@^3.0.0:
     lodash.memoize "^4.1.2"
     lodash.uniq "^4.5.0"
 
-caniuse-lite@^1.0.0, caniuse-lite@^1.0.30001036, caniuse-lite@^1.0.30001038:
-  version "1.0.30001038"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001038.tgz#44da3cbca2ab6cb6aa83d1be5d324e17f141caff"
+caniuse-lite@^1.0.0, caniuse-lite@^1.0.30001036, caniuse-lite@^1.0.30001219:
+  version "1.0.30001230"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001230.tgz#8135c57459854b2240b57a4a6786044bdc5a9f71"
 
 caseless@~0.12.0:
   version "0.12.0"
@@ -3179,6 +3176,10 @@ color@^3.0.0:
     color-convert "^1.9.1"
     color-string "^1.5.2"
 
+colorette@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
+
 colour@~0.7.1:
   version "0.7.1"
   resolved "https://registry.yarnpkg.com/colour/-/colour-0.7.1.tgz#9cb169917ec5d12c0736d3e8685746df1cadf778"
@@ -4265,9 +4266,9 @@ ee-first@1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/ee-first/-/ee-first-1.1.1.tgz#590c61156b0ae2f4f0255732a158b266bc56b21d"
 
-electron-to-chromium@^1.3.390:
-  version "1.3.394"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.394.tgz#50e927bb9f6a559ed21d284e7683ec5e2c784835"
+electron-to-chromium@^1.3.723:
+  version "1.3.739"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.739.tgz#f07756aa92cabd5a6eec6f491525a64fe62f98b9"
 
 elegant-spinner@^1.0.1:
   version "1.0.1"
@@ -4402,6 +4403,10 @@ es6-promisify@^5.0.0:
   dependencies:
     es6-promise "^4.0.3"
 
+escalade@^3.1.1:
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/escalade/-/escalade-3.1.1.tgz#d8cfdc7000965c5a0174b4a82eaa5c0552742e40"
+
 escape-goat@^2.0.0:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/escape-goat/-/escape-goat-2.1.1.tgz#1b2dc77003676c457ec760b2dc68edb648188675"
@@ -4846,7 +4851,7 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
-find-up@^2.0.0, find-up@^2.1.0:
+find-up@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
   dependencies:
@@ -7279,9 +7284,9 @@ node-libs-browser@^2.2.1:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
-node-releases@^1.1.53:
-  version "1.1.53"
-  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.53.tgz#2d821bfa499ed7c5dffc5e2f28c88e78a08ee3f4"
+node-releases@^1.1.71:
+  version "1.1.72"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.72.tgz#14802ab6b1039a79a0c7d662b610a5bbd76eacbe"
 
 nopt@1.0.10:
   version "1.0.10"
@@ -7909,12 +7914,6 @@ pkg-dir@^4.2.0:
   dependencies:
     find-up "^4.0.0"
 
-pkg-up@^2.0.0:
-  version "2.0.0"
-  resolved "https://registry.yarnpkg.com/pkg-up/-/pkg-up-2.0.0.tgz#c819ac728059a461cab1c3889a2be3c49a004d7f"
-  dependencies:
-    find-up "^2.1.0"
-
 please-upgrade-node@^3.2.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/please-upgrade-node/-/please-upgrade-node-3.2.0.tgz#aeddd3f994c933e4ad98b99d9a556efa0e2fe942"