diff --git a/packages/gatsby-plugin-sass/package.json b/packages/gatsby-plugin-sass/package.json
index 265350ce81ba9..334874ae16937 100644
--- a/packages/gatsby-plugin-sass/package.json
+++ b/packages/gatsby-plugin-sass/package.json
@@ -14,7 +14,7 @@
   "devDependencies": {
     "@babel/cli": "^7.15.4",
     "@babel/core": "^7.15.5",
-    "autoprefixer": "^10.3.6",
+    "autoprefixer": "^10.4.0",
     "babel-preset-gatsby-package": "^2.4.0-next.0",
     "cross-env": "^7.0.3",
     "gatsby-plugin-utils": "^2.4.0-next.0"
diff --git a/yarn.lock b/yarn.lock
index b65a1017c1791..5bd8e9eede7de 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5814,7 +5814,7 @@ autolinker@~0.28.0:
   dependencies:
     gulp-header "^1.7.1"
 
-autoprefixer@^10.1.0, autoprefixer@^10.3.6, autoprefixer@^10.4.0:
+autoprefixer@^10.1.0, autoprefixer@^10.4.0:
   version "10.4.0"
   resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-10.4.0.tgz#c3577eb32a1079a440ec253e404eaf1eb21388c8"
   integrity sha512-7FdJ1ONtwzV1G43GDD0kpVMn/qbiNqyOPMFTX5nRffI+7vgWoFEc6DcXOxHJxrWNDXrZh18eDsZjvZGUljSRGA==