diff --git a/package.json b/package.json
index c662b59..7d4bf6a 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "autoprefixer": "^9.7.3",
     "gatsby": "^2.18.18",
     "gatsby-link": "^2.2.24",
-    "gatsby-plugin-postcss": "^2.1.18",
+    "gatsby-plugin-postcss": "^2.1.20",
     "gatsby-plugin-react-helmet": "^3.1.18",
     "postcss-import": "^12.0.1",
     "precss": "^4.0.0",
diff --git a/yarn.lock b/yarn.lock
index b73ae7b..be28821 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4608,10 +4608,10 @@ gatsby-plugin-page-creator@^2.1.37:
     lodash "^4.17.15"
     micromatch "^3.1.10"
 
-gatsby-plugin-postcss@^2.1.18:
-  version "2.1.18"
-  resolved "https://registry.yarnpkg.com/gatsby-plugin-postcss/-/gatsby-plugin-postcss-2.1.18.tgz#bdb6bb54c91ea0d6c4c4ebf98d38e335858654c4"
-  integrity sha512-pQEC8vQ/wYbEoyhC5KOZHghGSO+jYUabTNS9zAbdu+PnAMZM3N5nzMOJ41yk+eFrSeB8ClGNPtKKwzE6AFja7g==
+gatsby-plugin-postcss@^2.1.20:
+  version "2.1.20"
+  resolved "https://registry.yarnpkg.com/gatsby-plugin-postcss/-/gatsby-plugin-postcss-2.1.20.tgz#643cfc03c8003a8470c23e8aa2f132723eebb435"
+  integrity sha512-Voy3B796JQxBBhd/4DVpD3dhQfAE5dnkXH2MXJgedmTS1hh0Gyj2lho6wEyVszyPygPNUjtF3mXVUc3yUZ+EGA==
   dependencies:
     "@babel/runtime" "^7.7.6"
     postcss-loader "^3.0.0"