diff --git a/package.json b/package.json
index be08fb181c..37ca754820 100644
--- a/package.json
+++ b/package.json
@@ -129,7 +129,7 @@
     "@yarnpkg/lockfile": "1.1.0",
     "ajv": "6.12.6",
     "ansi-colors": "4.1.1",
-    "autoprefixer": "10.0.3",
+    "autoprefixer": "10.0.4",
     "babel-loader": "8.2.2",
     "bootstrap": "^4.0.0",
     "browserslist": "^4.9.1",
diff --git a/packages/angular_devkit/build_angular/package.json b/packages/angular_devkit/build_angular/package.json
index f746b4a764..667959be64 100644
--- a/packages/angular_devkit/build_angular/package.json
+++ b/packages/angular_devkit/build_angular/package.json
@@ -20,7 +20,7 @@
     "@jsdevtools/coverage-istanbul-loader": "3.0.5",
     "@ngtools/webpack": "0.0.0",
     "ansi-colors": "4.1.1",
-    "autoprefixer": "10.0.3",
+    "autoprefixer": "10.0.4",
     "babel-loader": "8.2.2",
     "browserslist": "^4.9.1",
     "cacache": "15.0.5",
diff --git a/yarn.lock b/yarn.lock
index eed84bf08d..4fb95f62e7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -2584,10 +2584,10 @@ atob@^2.1.2:
   resolved "https://registry.yarnpkg.com/atob/-/atob-2.1.2.tgz#6d9517eb9e030d2436666651e86bd9f6f13533c9"
   integrity sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==
 
-autoprefixer@10.0.3:
-  version "10.0.3"
-  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-10.0.3.tgz#43c8fb60ab095f4b6ff7bc5d24cd05925112f2ce"
-  integrity sha512-SIUDNQlGARsfL69nsmi7OKnDtz1HVwPAiYPGn1Nv9eLMpBywXK5DNwAnvTq6aTjuPx3XKPl2boCQRYcThjJa2A==
+autoprefixer@10.0.4:
+  version "10.0.4"
+  resolved "https://registry.yarnpkg.com/autoprefixer/-/autoprefixer-10.0.4.tgz#f87ac6105d7861e31af794b8ebb1c6d4390d3d55"
+  integrity sha512-hmjYejN/WTyPP9cdNmiwtwqM8/ACVJPD5ExtwoOceQohNbgnFNiwpL2+U4bXS8aXozBL00WvH6WhqbuHf0Fgfg==
   dependencies:
     browserslist "^4.14.7"
     caniuse-lite "^1.0.30001161"