diff --git a/package.json b/package.json
index bf98c7098..d4cad86e3 100644
--- a/package.json
+++ b/package.json
@@ -50,7 +50,7 @@
     "lato-font": "^3.0.0",
     "mini-css-extract-plugin": "^1.3.0",
     "node-sass": "^5.0.0",
-    "postcss": "^8.1.6",
+    "postcss": "^8.1.12",
     "postcss-loader": "^4.0.4",
     "sass": "^1.29.0",
     "sass-loader": "^10.0.5",
diff --git a/yarn.lock b/yarn.lock
index f9f55cf7e..7ec47b710 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -4546,10 +4546,10 @@ nan@^2.12.1, nan@^2.13.2:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.2.tgz#f5376400695168f4cc694ac9393d0c9585eeea19"
   integrity sha512-M2ufzIiINKCuDfBSAUr1vWQ+vuVcA9kqx8JJUsbQi6yf1uGRyb7HfpdfUr5qLXf3B/t8dPvcjhKMmlfnP47EzQ==
 
-nanoid@^3.1.18:
-  version "3.1.18"
-  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.18.tgz#0680db22ab01c372e89209f5d18283d98de3e96d"
-  integrity sha512-rndlDjbbHbcV3xi+R2fpJ+PbGMdfBxz5v1fATIQFq0DP64FsicQdwnKLy47K4kZHdRpmQXtz24eGsxQqamzYTA==
+nanoid@^3.1.20:
+  version "3.1.20"
+  resolved "https://registry.yarnpkg.com/nanoid/-/nanoid-3.1.20.tgz#badc263c6b1dcf14b71efaa85f6ab4c1d6cfc788"
+  integrity sha512-a1cQNyczgKbLX9jwbS/+d7W8fX/RfgYR7lVWwWOGIPNgK2m0MWvrGF6/m4kk6U3QcFMnZf3RIhL0v2Jgh/0Uxw==
 
 nanomatch@^1.2.9:
   version "1.2.13"
@@ -5239,13 +5239,13 @@ postcss@^7.0.14, postcss@^7.0.2, postcss@^7.0.21, postcss@^7.0.26, postcss@^7.0.
     source-map "^0.6.1"
     supports-color "^6.1.0"
 
-postcss@^8.1.4, postcss@^8.1.6:
-  version "8.1.10"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.10.tgz#129834f94c720554d2cfdaeb27d5542ac4a026ea"
-  integrity sha512-iBXEV5VTTYaRRdxiFYzTtuv2lGMQBExqkZKSzkJe+Fl6rvQrA/49UVGKqB+LG54hpW/TtDBMGds8j33GFNW7pg==
+postcss@^8.1.12, postcss@^8.1.4:
+  version "8.1.12"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-8.1.12.tgz#4d234d588ed6444e7b4e76236ab4169638ab89af"
+  integrity sha512-FHjbAbrVLVxizeQhr3yiGnmtj1O2dhUIZSJWhJN2/ZJrcKlAbc5ysDjB/nVIhcfaj0eUlx0knDCrN/gkOe4xTA==
   dependencies:
     colorette "^1.2.1"
-    nanoid "^3.1.18"
+    nanoid "^3.1.20"
     source-map "^0.6.1"
     vfile-location "^3.2.0"