diff --git a/package.json b/package.json
index 413305d..79d712f 100644
--- a/package.json
+++ b/package.json
@@ -47,7 +47,7 @@
     "contributors": "https://github.com/TryGhost/Casper/graphs/contributors",
     "devDependencies": {
         "@tryghost/release-utils": "0.6.8",
-        "autoprefixer": "10.0.3",
+        "autoprefixer": "10.0.4",
         "beeper": "2.0.0",
         "cssnano": "4.1.10",
         "gscan": "3.6.0",
diff --git a/yarn.lock b/yarn.lock
index c6dd6bc..96fa5ab 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -419,10 +419,10 @@ 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"