diff --git a/package.json b/package.json
index eb872cc1..e35980ff 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
         "gscan": "4.0.1",
         "gulp": "4.0.2",
         "gulp-livereload": "4.0.2",
-        "gulp-postcss": "8.0.0",
+        "gulp-postcss": "9.0.0",
         "gulp-sourcemaps": "2.6.5",
         "gulp-uglify": "3.0.2",
         "gulp-util": "3.0.8",
diff --git a/yarn.lock b/yarn.lock
index 9570618f..1dac69e5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1766,7 +1766,7 @@ fancy-log@1.3.2:
     color-support "^1.1.3"
     time-stamp "^1.0.0"
 
-fancy-log@^1.1.0, fancy-log@^1.3.2:
+fancy-log@^1.1.0, fancy-log@^1.3.2, fancy-log@^1.3.3:
   version "1.3.3"
   resolved "https://registry.yarnpkg.com/fancy-log/-/fancy-log-1.3.3.tgz#dbc19154f558690150a23953a0adbd035be45fc7"
   integrity sha512-k9oEhlyc0FrVh25qYuSELjr8oxsCoc4/LEZfg2iJJrfEk/tZL9bCoJE47gqAvI2m/AUjluCS4+3I0eTx8n3AEw==
@@ -2259,15 +2259,14 @@ gulp-livereload@4.0.2:
     tiny-lr "^1.1.1"
     vinyl "^2.2.0"
 
-gulp-postcss@8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-8.0.0.tgz#8d3772cd4d27bca55ec8cb4c8e576e3bde4dc550"
-  integrity sha512-Wtl6vH7a+8IS/fU5W9IbOpcaLqKxd5L1DUOzaPmlnCbX1CrG0aWdwVnC3Spn8th0m8D59YbysV5zPUe1n/GJYg==
+gulp-postcss@9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-9.0.0.tgz#2ade18809ab475dae743a88bd6501af0b04ee54e"
+  integrity sha512-5mSQ9CK8salSagrXgrVyILfEMy6I5rUGPRiR9rVjgJV9m/rwdZYUhekMr+XxDlApfc5ZdEJ8gXNZrU/TsgT5dQ==
   dependencies:
-    fancy-log "^1.3.2"
+    fancy-log "^1.3.3"
     plugin-error "^1.0.1"
-    postcss "^7.0.2"
-    postcss-load-config "^2.0.0"
+    postcss-load-config "^2.1.1"
     vinyl-sourcemaps-apply "^0.2.1"
 
 gulp-sourcemaps@2.6.5:
@@ -4086,7 +4085,7 @@ postcss-import@^10.0.0:
     read-cache "^1.0.0"
     resolve "^1.1.7"
 
-postcss-load-config@^2.0.0:
+postcss-load-config@^2.1.1:
   version "2.1.2"
   resolved "https://registry.yarnpkg.com/postcss-load-config/-/postcss-load-config-2.1.2.tgz#c5ea504f2c4aef33c7359a34de3573772ad7502a"
   integrity sha512-/rDeGV6vMUo3mwJZmeHfEDvwnTKKqQ0S7OHUi/kJvvtx3aWtyWG2/0ZWnzCt2keEclwN6Tf0DST2v9kITdOKYw==