diff --git a/yarn.lock b/yarn.lock
index 280ae0a..892d626 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4083,6 +4083,11 @@ pbkdf2@^3.0.3:
     safe-buffer "^5.0.1"
     sha.js "^2.4.8"
 
+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==
+
 pify@^2.0.0:
   version "2.3.0"
   resolved "https://registry.yarnpkg.com/pify/-/pify-2.3.0.tgz#ed141a6ac043a849ea588498e7dca8b15330e90c"
@@ -4506,13 +4511,12 @@ postcss-values-parser@^2.0.0, postcss-values-parser@^2.0.1:
     uniq "^1.0.1"
 
 postcss@^7.0.0, postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.17, postcss@^7.0.18, postcss@^7.0.2, postcss@^7.0.23, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.23"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.23.tgz#9f9759fad661b15964f3cfc3140f66f1e05eadc1"
-  integrity sha512-hOlMf3ouRIFXD+j2VJecwssTwbvsPGJVMzupptg+85WA+i7MwyrydmQAgY3R+m0Bc0exunhbJmijy8u8+vufuQ==
+  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"
 
 prepend-http@^1.0.0:
   version "1.0.4"