diff --git a/yarn.lock b/yarn.lock
index 35b371c..77861a6 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1648,11 +1648,16 @@ bser@2.1.1:
   dependencies:
     node-int64 "^0.4.0"
 
-buffer-from@1.x, buffer-from@^1.0.0:
+buffer-from@1.x:
   version "1.1.1"
   resolved "https://registry.npm.taobao.org/buffer-from/download/buffer-from-1.1.1.tgz#32713bc028f75c02fdb710d7c7bcec1f2c6070ef"
   integrity sha1-MnE7wCj3XAL9txDXx7zsHyxgcO8=
 
+buffer-from@^1.0.0:
+  version "1.1.2"
+  resolved "https://registry.yarnpkg.com/buffer-from/-/buffer-from-1.1.2.tgz#2b146a6fd72e80b4f55d255f35ed59a3a9a41bd5"
+  integrity sha512-E+XQCRwSbaaiChtv6k6Dwgc+bx+Bs6vuKJHHl5kox/BaKbhiXzqQOwK4cO22yElGp2OCmjwVhT3HmxgyPGnJfQ==
+
 builtin-modules@^3.1.0:
   version "3.1.0"
   resolved "https://registry.npm.taobao.org/builtin-modules/download/builtin-modules-3.1.0.tgz#aad97c15131eb76b65b50ef208e7584cd76a7484"
@@ -5436,9 +5441,9 @@ source-map-resolve@^0.5.0:
     urix "^0.1.0"
 
 source-map-support@^0.5.6, source-map-support@~0.5.12:
-  version "0.5.16"
-  resolved "https://registry.npm.taobao.org/source-map-support/download/source-map-support-0.5.16.tgz?cache=0&sync_timestamp=1572389965235&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsource-map-support%2Fdownload%2Fsource-map-support-0.5.16.tgz#0ae069e7fe3ba7538c64c98515e35339eac5a042"
-  integrity sha1-CuBp5/47p1OMZMmFFeNTOerFoEI=
+  version "0.5.21"
+  resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.21.tgz#04fe7c7f9e1ed2d662233c28cb2b35b9f63f6e4f"
+  integrity sha512-uBHU3L3czsIyYXKX88fdrGovxdSCoTGDRZ6SYXtSRxLZUzHg5P/66Ht6uoUlHu9EZod+inXhKo3qQgwXUT/y1w==
   dependencies:
     buffer-from "^1.0.0"
     source-map "^0.6.0"
@@ -5455,8 +5460,8 @@ source-map@^0.5.0, source-map@^0.5.6:
 
 source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.1:
   version "0.6.1"
-  resolved "https://registry.npm.taobao.org/source-map/download/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
-  integrity sha1-dHIq8y6WFOnCh6jQu95IteLxomM=
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
+  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
 sourcemap-codec@^1.4.4:
   version "1.4.8"
@@ -5706,9 +5711,9 @@ table@^5.2.3:
     string-width "^3.0.0"
 
 terser@^4.6.2:
-  version "4.6.3"
-  resolved "https://registry.npm.taobao.org/terser/download/terser-4.6.3.tgz#e33aa42461ced5238d352d2df2a67f21921f8d87"
-  integrity sha1-4zqkJGHO1SONNS0t8qZ/IZIfjYc=
+  version "4.8.1"
+  resolved "https://registry.yarnpkg.com/terser/-/terser-4.8.1.tgz#a00e5634562de2239fd404c649051bf6fc21144f"
+  integrity sha512-4GnLC0x667eJG0ewJTa6z/yXrbLGv80D9Ru6HIpCQmO+Q4PfEtBFi0ObSckqwL6VyQv/7ENJieXHo2ANmdQwgw==
   dependencies:
     commander "^2.20.0"
     source-map "~0.6.1"