diff --git a/yarn.lock b/yarn.lock
index e3c4004c..d6920bdd 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -400,7 +400,7 @@ ccount@^1.0.0:
   resolved "http://registry.npm.baidu-int.com/ccount/-/ccount-1.0.5.tgz#ac82a944905a65ce204eb03023157edf29425c17"
   integrity sha1-rIKpRJBaZc4gTrAwIxV+3ylCXBc=
 
-chalk@^2.0.0, chalk@^2.0.1, chalk@^2.4.1, chalk@^2.4.2:
+chalk@^2.0.0, chalk@^2.0.1, chalk@^2.4.1:
   version "2.4.2"
   resolved "http://registry.npm.baidu-int.com/chalk/-/chalk-2.4.2.tgz#cd42541677a54333cf541a49108c1432b44c9424"
   integrity sha1-zUJUFnelQzPPVBpJEIwUMrRMlCQ=
@@ -1504,6 +1504,11 @@ path-type@^4.0.0:
   resolved "http://registry.npm.baidu-int.com/path-type/-/path-type-4.0.0.tgz#84ed01c0a7ba380afe09d90a8c180dcd9d03043b"
   integrity sha1-hO0BwKe6OAr+CdkKjBgNzZ0DBDs=
 
+picocolors@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-0.2.1.tgz#570670f793646851d1ba135996962abad587859f"
+  integrity sha512-cMlDqaLEqfSaW8Z7N5Jw+lyIW869EzT73/F5lhtY9cLGoVxSXznfgfXMO0Z5K0o0Q2TkTXq+0KFsdnSe3jDViA==
+
 picomatch@^2.0.5, picomatch@^2.2.1:
   version "2.2.2"
   resolved "http://registry.npm.baidu-int.com/picomatch/-/picomatch-2.2.2.tgz#21f333e9b6b8eaff02468f5146ea406d345f4dad"
@@ -1606,13 +1611,12 @@ postcss-value-parser@^4.1.0:
   integrity sha1-RD9qIM7WSBor2k+oUypuVdeJoss=
 
 postcss@^7.0.14, postcss@^7.0.2, postcss@^7.0.21, postcss@^7.0.26, postcss@^7.0.32, postcss@^7.0.6, postcss@^7.0.7:
-  version "7.0.32"
-  resolved "http://registry.npm.baidu-int.com/postcss/-/postcss-7.0.32.tgz#4310d6ee347053da3433db2be492883d62cec59d"
-  integrity sha1-QxDW7jRwU9o0M9sr5JKIPWLOxZ0=
+  version "7.0.39"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.39.tgz#9624375d965630e2e1f2c02a935c82a59cb48309"
+  integrity sha512-yioayjNbHn6z1/Bywyb2Y4s3yvDAeXGOyxqD+LnVOinq6Mdmd++SW2wUNVzavyyHxd6+DxzWGIuosg6P1Rj8uA==
   dependencies:
-    chalk "^2.4.2"
+    picocolors "^0.2.1"
     source-map "^0.6.1"
-    supports-color "^6.1.0"
 
 prettier@^2.0.5:
   version "2.0.5"
@@ -1864,8 +1868,8 @@ source-map@^0.5.0:
 
 source-map@^0.6.1:
   version "0.6.1"
-  resolved "http://registry.npm.baidu-int.com/source-map/-/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==
 
 spdx-correct@^3.0.0:
   version "3.1.1"
@@ -2064,13 +2068,6 @@ supports-color@^5.3.0:
   dependencies:
     has-flag "^3.0.0"
 
-supports-color@^6.1.0:
-  version "6.1.0"
-  resolved "http://registry.npm.baidu-int.com/supports-color/-/supports-color-6.1.0.tgz#0764abc69c63d5ac842dd4867e8d025e880df8f3"
-  integrity sha1-B2Srxpxj1ayELdSGfo0CXogN+PM=
-  dependencies:
-    has-flag "^3.0.0"
-
 supports-color@^7.1.0:
   version "7.1.0"
   resolved "http://registry.npm.baidu-int.com/supports-color/-/supports-color-7.1.0.tgz#68e32591df73e25ad1c4b49108a2ec507962bfd1"