diff --git a/package.json b/package.json
index 6e56323..8d355c3 100644
--- a/package.json
+++ b/package.json
@@ -90,7 +90,7 @@
     },
     "devDependencies": {
         "@tryghost/shared-theme-assets": "2.4.5",
-        "autoprefixer": "10.4.19",
+        "autoprefixer": "10.4.20",
         "beeper": "2.1.0",
         "cssnano": "7.0.4",
         "gscan": "4.43.2",