diff --git a/packages/gatsby-plugin-postcss/package.json b/packages/gatsby-plugin-postcss/package.json
index b0dcb087c5fef..9a51aad1629a9 100644
--- a/packages/gatsby-plugin-postcss/package.json
+++ b/packages/gatsby-plugin-postcss/package.json
@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.20.13",
-    "postcss-loader": "^7.3.2"
+    "postcss-loader": "^7.3.3"
   },
   "devDependencies": {
     "@babel/cli": "^7.20.7",
diff --git a/yarn.lock b/yarn.lock
index ebda3d16e622f..b6e7d4c3b56ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -8371,10 +8371,10 @@ cosmiconfig@^7.0.0:
     path-type "^4.0.0"
     yaml "^1.10.0"
 
-cosmiconfig@^8.1.3:
-  version "8.1.3"
-  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-8.1.3.tgz#0e614a118fcc2d9e5afc2f87d53cd09931015689"
-  integrity sha512-/UkO2JKI18b5jVMJUp0lvKFMpa/Gye+ZgZjKD+DGEN9y7NRcf/nK1A0sp67ONmKtnDCNMS44E6jrk0Yc3bDuUw==
+cosmiconfig@^8.2.0:
+  version "8.2.0"
+  resolved "https://registry.yarnpkg.com/cosmiconfig/-/cosmiconfig-8.2.0.tgz#f7d17c56a590856cd1e7cee98734dca272b0d8fd"
+  integrity sha512-3rTMnFJA1tCOPwRxtgF4wd7Ab2qvDbL8jX+3smjIbS4HlZBagTlpERbdN7iAbWlrfxE3M8c27kTwTawQ7st+OQ==
   dependencies:
     import-fresh "^3.2.1"
     js-yaml "^4.1.0"
@@ -14934,7 +14934,7 @@ kleur@^3.0.2, kleur@^3.0.3:
   resolved "https://registry.yarnpkg.com/kleur/-/kleur-3.0.3.tgz#a79c9ecc86ee1ce3fa6206d1216c501f147fc07e"
   integrity sha512-eTIzlVOSUR+JxdDFepEYcBMtZ9Qqdef+rnzWdRZuMbOywu5tO2w2N7rqjoANZ5k9vywhL6Br1VRjUIgTQx4E8w==
 
-klona@^2.0.4, klona@^2.0.6:
+klona@^2.0.4:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/klona/-/klona-2.0.6.tgz#85bffbf819c03b2f53270412420a4555ef882e22"
   integrity sha512-dhG34DXATL5hSxJbIexCft8FChFXtmskoZYnoPWjXQuebWYCNkVeV3KkGegCK9CP1oswI/vQibS2GY7Em/sJJA==
@@ -18746,14 +18746,13 @@ postcss-loader@^5.3.0:
     klona "^2.0.4"
     semver "^7.3.4"
 
-postcss-loader@^7.3.2:
-  version "7.3.2"
-  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-7.3.2.tgz#ac3344ad1f14bb65df135744b7efae4dbdad4301"
-  integrity sha512-c7qDlXErX6n0VT+LUsW+nwefVtTu3ORtVvK8EXuUIDcxo+b/euYqpuHlJAvePb0Af5e8uMjR/13e0lTuYifaig==
+postcss-loader@^7.3.3:
+  version "7.3.3"
+  resolved "https://registry.yarnpkg.com/postcss-loader/-/postcss-loader-7.3.3.tgz#6da03e71a918ef49df1bb4be4c80401df8e249dd"
+  integrity sha512-YgO/yhtevGO/vJePCQmTxiaEwER94LABZN0ZMT4A0vsak9TpO+RvKRs7EmJ8peIlB9xfXCsS7M8LjqncsUZ5HA==
   dependencies:
-    cosmiconfig "^8.1.3"
+    cosmiconfig "^8.2.0"
     jiti "^1.18.2"
-    klona "^2.0.6"
     semver "^7.3.8"
 
 postcss-merge-longhand@^4.0.11: