diff --git a/yarn.lock b/yarn.lock
index 9942a1a85..1f33d0d00 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5805,9 +5805,9 @@ postcss@^6.0.1:
     supports-color "^5.4.0"
 
 postcss@^7.0.1, postcss@^7.0.27:
-  version "7.0.27"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.27.tgz#cc67cdc6b0daa375105b7c424a85567345fc54d9"
-  integrity sha512-WuQETPMcW9Uf1/22HWUWP9lgsIC+KEHg2kozMflKjbeUtw9ujvFX6QmIfozaErDkmLWS9WEnEdEe6Uo9/BNTdQ==
+  version "7.0.28"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.28.tgz#d349ced7743475717ba91f6810efb58c51fb5dbb"
+  integrity sha512-YU6nVhyWIsVtlNlnAj1fHTsUKW5qxm3KEgzq2Jj6KTEFOTK8QWR12eIDvrlWhiSTK8WIBFTBhOJV4DY6dUuEbw==
   dependencies:
     chalk "^2.4.2"
     source-map "^0.6.1"