diff --git a/package.json b/package.json
index 2f2f015..02e46c4 100644
--- a/package.json
+++ b/package.json
@@ -146,7 +146,7 @@
     "karma-spec-reporter": "^0.0.32",
     "karma-webpack": "3.0.0",
     "mocha": "^3.1.2",
-    "postcss": "^6.0.0",
+    "postcss": "^8.4.31",
     "postcss-import": "^11.0.0",
     "postcss-loader": "^3.0.0",
     "react": "^16.8.6",
diff --git a/yarn.lock b/yarn.lock
index 213d7b3..4e5fbc1 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -14598,6 +14598,11 @@ nanoid@^2.1.0:
   resolved "https://registry.npmjs.org/nanoid/-/nanoid-2.1.11.tgz"
   integrity sha512-s/snB+WGm6uwi0WjsZdaVcuf3KJXlfGl2LcxgwkEwJF0D/BWzVWAZW/XY4bFaiR7s0Jk3FPvlnepg1H1b1UwlA==
 
+nanoid@^3.3.6:
+  version "3.3.6"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.3.6.tgz#443380c856d6e9f9824267d960b4236ad583ea4c"
+  integrity sha512-BGcqMMJuToF7i1rt+2PWSNVnWIkGCU78jBG3RxO/bZlnZPK2Cmi2QaffxGO/2RvWi9sL+FAiRiXMgsyxQ1DIDA==
+
 nanomatch@^1.2.9:
   version "1.2.13"
   resolved "https://registry.npmjs.org/nanomatch/-/nanomatch-1.2.13.tgz"
@@ -15692,6 +15697,11 @@ performance-now@^2.1.0:
   resolved "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz"
   integrity sha1-Ywn04OX6kT7BxpMHrjZLSzd8nns=
 
+picocolors@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/picocolors/-/picocolors-1.0.0.tgz#cb5bdc74ff3f51892236eaf79d68bc44564ab81c"
+  integrity sha512-1fygroTLlHu66zi26VoTDv8yRgm0Fccecssto+MhsZ0D/DGW2sm8E8AjW7NU5VVTRt5GxbeZ5qBuJr+HyLYkjQ==
+
 picomatch@^2.0.4, picomatch@^2.0.5, picomatch@^2.2.1, picomatch@^2.2.3:
   version "2.3.0"
   resolved "https://registry.npmjs.org/picomatch/-/picomatch-2.3.0.tgz"
@@ -16412,7 +16422,7 @@ postcss@6.0.1:
     source-map "^0.5.6"
     supports-color "^3.2.3"
 
-postcss@^6.0.0, postcss@^6.0.1, postcss@^6.0.2, postcss@^6.0.3:
+postcss@^6.0.1, postcss@^6.0.2, postcss@^6.0.3:
   version "6.0.23"
   resolved "https://registry.npmjs.org/postcss/-/postcss-6.0.23.tgz"
   integrity sha512-soOk1h6J3VMTZtVeVpv15/Hpdl2cBLX3CAw4TAbkpTJiNPk9YP/zWcD1ND+xEtvyuuvKzbxliTOIyvkSeSJ6ag==
@@ -16430,6 +16440,15 @@ postcss@^7, postcss@^7.0.0, postcss@^7.0.1, postcss@^7.0.13, postcss@^7.0.14, po
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
+postcss@^8.4.31:
+  version "8.4.31"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.4.31.tgz#92b451050a9f914da6755af352bdc0192508656d"
+  integrity sha512-PS08Iboia9mts/2ygV3eLpY5ghnUcfLV/EXTOW1E2qYxJKGGBUtNjN76FYHnMs36RmARn41bC0AZmn+rR0OVpQ==
+  dependencies:
+    nanoid "^3.3.6"
+    picocolors "^1.0.0"
+    source-map-js "^1.0.2"
+
 prelude-ls@^1.2.1:
   version "1.2.1"
   resolved "https://registry.npmjs.org/prelude-ls/-/prelude-ls-1.2.1.tgz"
@@ -19036,6 +19055,11 @@ source-list-map@^2.0.0:
   resolved "https://registry.npmjs.org/source-list-map/-/source-list-map-2.0.1.tgz"
   integrity sha512-qnQ7gVMxGNxsiL4lEuJwe/To8UnK7fAnmbGEEH8RpLouuKbeEm0lhbQVFIrNSuB+G7tVrAlVsZgETT5nljf+Iw==
 
+source-map-js@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/source-map-js/-/source-map-js-1.0.2.tgz#adbc361d9c62df380125e7f161f71c826f1e490c"
+  integrity sha512-R0XvVJ9WusLiqTCEiGCmICCMplcCkIwwR11mOSD9CR5u+IXYdiseeEuXCVAjS54zqwkLcPNnmU4OeJ6tUrWhDw==
+
 source-map-resolve@^0.5.0:
   version "0.5.3"
   resolved "https://registry.npmjs.org/source-map-resolve/-/source-map-resolve-0.5.3.tgz"