diff --git a/vue-2.6-source/yarn.lock b/vue-2.6-source/yarn.lock
index 2a370eb..458054a 100644
--- a/vue-2.6-source/yarn.lock
+++ b/vue-2.6-source/yarn.lock
@@ -1569,13 +1569,15 @@ browserify-zlib@^0.2.0:
     pako "~1.0.5"
 
 browserslist@^4.3.4:
-  version "4.3.7"
-  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.3.7.tgz#f1de479a6466ea47a0a26dcc725e7504817e624a"
-  integrity sha512-pWQv51Ynb0MNk9JGMCZ8VkM785/4MQNXiFYtPqI7EEP0TJO+/d/NqRVn1uiAN0DNbnlUSpL2sh16Kspasv3pUQ==
+  version "4.16.6"
+  resolved "https://registry.yarnpkg.com/browserslist/-/browserslist-4.16.6.tgz#d7901277a5a88e554ed305b183ec9b0c08f66fa2"
+  integrity sha512-Wspk/PqO+4W9qp5iUTJsa1B/QrYn1keNCcEP5OvP7WBwT4KaDly0uONYmC6Xa3Z5IqnUgS0KcgLYu1l74x0ZXQ==
   dependencies:
-    caniuse-lite "^1.0.30000925"
-    electron-to-chromium "^1.3.96"
-    node-releases "^1.1.3"
+    caniuse-lite "^1.0.30001219"
+    colorette "^1.2.2"
+    electron-to-chromium "^1.3.723"
+    escalade "^3.1.1"
+    node-releases "^1.1.71"
 
 buble@^0.19.3, buble@^0.19.6:
   version "0.19.6"
@@ -1725,10 +1727,10 @@ camelcase@^4.1.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
   integrity sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=
 
-caniuse-lite@^1.0.30000925:
-  version "1.0.30000927"
-  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30000927.tgz#114a9de4ff1e01f5790fe578ecd93421c7524665"
-  integrity sha512-ogq4NbUWf1uG/j66k0AmiO3GjqJAlQyF8n4w8a954cbCyFKmYGvRtgz6qkq2fWuduTXHibX7GyYL5Pg58Aks2g==
+caniuse-lite@^1.0.30001219:
+  version "1.0.30001230"
+  resolved "https://registry.yarnpkg.com/caniuse-lite/-/caniuse-lite-1.0.30001230.tgz#8135c57459854b2240b57a4a6786044bdc5a9f71"
+  integrity sha512-5yBd5nWCBS+jWKTcHOzXwo5xzcj4ePE/yjtkZyUV1BTUmrBaA9MRGC+e7mxnqXSA90CmCA8L3eKLaSUkt099IQ==
 
 caseless@~0.12.0:
   version "0.12.0"
@@ -1917,6 +1919,11 @@ color-name@1.1.3:
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
   integrity sha1-p9BVi9icQveV3UIyj3QIMcpTvCU=
 
+colorette@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/colorette/-/colorette-1.2.2.tgz#cbcc79d5e99caea2dbf10eb3a26fd8b3e6acfa94"
+  integrity sha512-MKGMzyfeuutC/ZJ1cba9NqcNpfeqMUcYmyF1ZFY6/Cn7CNSAKx6a+s48sqLqyAiZuaP2TcqMhoo+dlwFnVxT9w==
+
 colors@1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.0.3.tgz#0433f44d809680fdeb60ed260f1b0c262e82a40b"
@@ -2696,10 +2703,10 @@ ejs@2.5.7:
   resolved "https://registry.yarnpkg.com/ejs/-/ejs-2.5.7.tgz#cc872c168880ae3c7189762fd5ffc00896c9518a"
   integrity sha1-zIcsFoiArjxxiXYv1f/ACJbJUYo=
 
-electron-to-chromium@^1.3.96:
-  version "1.3.98"
-  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.98.tgz#f200bdac84b1110d7d9904f34f4fc6d5573a8a9c"
-  integrity sha512-WIZdNuvE3dFr6kkPgv4d/cfswNZD6XbeLBM8baOIQTsnbf4xWrVEaLvp7oNnbnMWWXDqq7Tbv+H5JfciLTJm4Q==
+electron-to-chromium@^1.3.723:
+  version "1.3.738"
+  resolved "https://registry.yarnpkg.com/electron-to-chromium/-/electron-to-chromium-1.3.738.tgz#aec24b091c82acbfabbdcce08076a703941d17ca"
+  integrity sha512-vCMf4gDOpEylPSLPLSwAEsz+R3ShP02Y3cAKMZvTqule3XcPp7tgc/0ESI7IS6ZeyBlGClE50N53fIOkcIVnpw==
 
 elegant-spinner@^1.0.1:
   version "1.0.1"
@@ -2849,6 +2856,11 @@ 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"
+  integrity sha512-k0er2gUkLf8O0zKJiAhmkTnJlTvINGv7ygDNPbeIsX/TJjGJZHuh9B2UxbsaEkmlEo9MfhrSzmhIlhRlI2GXnw==
+
 escape-html@~1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/escape-html/-/escape-html-1.0.3.tgz#0258eae4d3d0c0974de1c169188ef0051d1d1988"
@@ -5772,12 +5784,10 @@ node-pre-gyp@^0.10.0:
     semver "^5.3.0"
     tar "^4"
 
-node-releases@^1.1.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.3.tgz#aad9ce0dcb98129c753f772c0aa01360fb90fbd2"
-  integrity sha512-6VrvH7z6jqqNFY200kdB6HdzkgM96Oaj9v3dqGfgp6mF+cHmU4wyQKZ2/WPDRVoR0Jz9KqbamaBN0ZhdUaysUQ==
-  dependencies:
-    semver "^5.3.0"
+node-releases@^1.1.71:
+  version "1.1.72"
+  resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.72.tgz#14802ab6b1039a79a0c7d662b610a5bbd76eacbe"
+  integrity sha512-LLUo+PpH3dU6XizX3iVoubUNheF/owjXCZZ5yACDxNnPtgFuludV1ZL3ayK1kVep42Rmm0+R9/Y60NQbZ2bifw==
 
 nopt@3.x:
   version "3.0.6"