diff --git a/package.json b/package.json
index 4054d23d51..b6d97be164 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
         "gulp": "4.0.2",
         "gulp-concat": "2.6.1",
         "gulp-livereload": "4.0.2",
-        "gulp-postcss": "9.0.1",
+        "gulp-postcss": "10.0.0",
         "gulp-uglify": "3.0.2",
         "gulp-zip": "5.1.0",
         "inquirer": "8.2.4",
diff --git a/yarn.lock b/yarn.lock
index d305ff33d7..80b625899c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2591,7 +2591,7 @@ extsprintf@^1.2.0:
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
   integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
 
-fancy-log@^1.3.2, fancy-log@^1.3.3:
+fancy-log@^1.3.2:
   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==
@@ -2601,6 +2601,13 @@ fancy-log@^1.3.2, fancy-log@^1.3.3:
     parse-node-version "^1.0.0"
     time-stamp "^1.0.0"
 
+fancy-log@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/fancy-log/-/fancy-log-2.0.0.tgz#cad207b8396d69ae4796d74d17dff5f68b2f7343"
+  integrity sha512-9CzxZbACXMUXW13tS0tI8XsGGmxWzO2DmYrGuBJOJ8k8q2K7hwfJA5qHjuPPe8wtsco33YR9wc+Rlr5wYFvhSA==
+  dependencies:
+    color-support "^1.1.3"
+
 fast-deep-equal@^3.1.1:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
@@ -3080,14 +3087,14 @@ gulp-livereload@4.0.2:
     tiny-lr "^1.1.1"
     vinyl "^2.2.0"
 
-gulp-postcss@9.0.1:
-  version "9.0.1"
-  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-9.0.1.tgz#d43caa2f2ce1018f889f7c1296faf82e9928b66f"
-  integrity sha512-9QUHam5JyXwGUxaaMvoFQVT44tohpEFpM8xBdPfdwTYGM0AItS1iTQz0MpsF8Jroh7GF5Jt2GVPaYgvy8qD2Fw==
+gulp-postcss@10.0.0:
+  version "10.0.0"
+  resolved "https://registry.yarnpkg.com/gulp-postcss/-/gulp-postcss-10.0.0.tgz#a88d7c6602f8a8c94aaa9f28ac3a68def00c7ada"
+  integrity sha512-z1RF2RJEX/BvFsKN11PXai8lRmihZTiHnlJf7Zu8uHaA/Q7Om4IeN8z1NtMAW5OiLwUY02H0DIFl9tHl0CNSgA==
   dependencies:
-    fancy-log "^1.3.3"
-    plugin-error "^1.0.1"
-    postcss-load-config "^3.0.0"
+    fancy-log "^2.0.0"
+    plugin-error "^2.0.1"
+    postcss-load-config "^5.0.0"
     vinyl-sourcemaps-apply "^0.2.1"
 
 gulp-uglify@3.0.2:
@@ -3731,11 +3738,16 @@ liftoff@^3.1.0:
     rechoir "^0.6.2"
     resolve "^1.1.7"
 
-lilconfig@^2.0.3, lilconfig@^2.0.5:
+lilconfig@^2.0.3:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/lilconfig/-/lilconfig-2.0.6.tgz#32a384558bd58af3d4c6e077dd1ad1d397bc69d4"
   integrity sha512-9JROoBW7pobfsx+Sq2JsASvCo6Pfo6WWoUW79HuB1BCoBXD4PLWJPqDF6fNj67pqBYTbAHkE57M1kS/+L1neOg==
 
+lilconfig@^3.1.1:
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/lilconfig/-/lilconfig-3.1.2.tgz#e4a7c3cb549e3a606c8dcc32e5ae1005e62c05cb"
+  integrity sha512-eop+wDAvpItUys0FWkHIKeC9ybYrTGbU41U5K7+bttZZeohvnY7M9dZ5kB21GNWiFT2q1OoPTvncPCgSOVO5ow==
+
 livereload-js@^2.3.0:
   version "2.4.0"
   resolved "https://registry.yarnpkg.com/livereload-js/-/livereload-js-2.4.0.tgz#447c31cf1ea9ab52fc20db615c5ddf678f78009c"
@@ -4487,6 +4499,13 @@ plugin-error@^1.0.1:
     arr-union "^3.1.0"
     extend-shallow "^3.0.2"
 
+plugin-error@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/plugin-error/-/plugin-error-2.0.1.tgz#f2ac92bac8c85e3e23492d76d0c3ca12f30eb00b"
+  integrity sha512-zMakqvIDyY40xHOvzXka0kUvf40nYIuwRE8dWhti2WtjQZ31xAgBZBhxsK7vK3QbRXS1Xms/LO7B5cuAsfB2Gg==
+  dependencies:
+    ansi-colors "^1.0.1"
+
 pluralize@^8.0.0:
   version "8.0.0"
   resolved "https://registry.yarnpkg.com/pluralize/-/pluralize-8.0.0.tgz#1a6fa16a38d12a1901e0320fa017051c539ce3b1"
@@ -4574,13 +4593,13 @@ postcss-import@^14.0.0:
     read-cache "^1.0.0"
     resolve "^1.1.7"
 
-postcss-load-config@^3.0.0:
-  version "3.1.4"
-  resolved "https://registry.yarnpkg.com/postcss-load-config/-/postcss-load-config-3.1.4.tgz#1ab2571faf84bb078877e1d07905eabe9ebda855"
-  integrity sha512-6DiM4E7v4coTE4uzA8U//WhtPwyhiim3eyjEMFCnUpzbrkK9wJHgKDT2mR+HbtSrd/NubVaYTOpSpjUl8NQeRg==
+postcss-load-config@^5.0.0:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/postcss-load-config/-/postcss-load-config-5.1.0.tgz#4ded23410da973e05edae9d41fa99bb5c1d5477f"
+  integrity sha512-G5AJ+IX0aD0dygOE0yFZQ/huFFMSNneyfp0e3/bT05a8OfPC5FUoZRPfGijUdGOJNMewJiwzcHJXFafFzeKFVA==
   dependencies:
-    lilconfig "^2.0.5"
-    yaml "^1.10.2"
+    lilconfig "^3.1.1"
+    yaml "^2.4.2"
 
 postcss-merge-longhand@^5.1.6:
   version "5.1.6"
@@ -6060,6 +6079,11 @@ yaml@^1.10.2:
   resolved "https://registry.yarnpkg.com/yaml/-/yaml-1.10.2.tgz#2301c5ffbf12b467de8da2333a459e29e7920e4b"
   integrity sha512-r3vXyErRCYJ7wg28yvBY5VSoAF8ZvlcW9/BwUzEtUsjvX/DKs24dIkuwjtuprwJJHsbyUbLApepYTR1BN4uHrg==
 
+yaml@^2.4.2:
+  version "2.4.5"
+  resolved "https://registry.yarnpkg.com/yaml/-/yaml-2.4.5.tgz#60630b206dd6d84df97003d33fc1ddf6296cca5e"
+  integrity sha512-aBx2bnqDzVOyNKfsysjA2ms5ZlnjSAW2eG3/L5G/CSujfjLJTJsEw1bGw8kCf04KodQWk1pxlGnZ56CRxiawmg==
+
 yargs-parser@5.0.0-security.0:
   version "5.0.0-security.0"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-5.0.0-security.0.tgz#4ff7271d25f90ac15643b86076a2ab499ec9ee24"