diff --git a/Casks/a/affine.rb b/Casks/a/affine.rb
index e2e063ef19..e9059df1ea 100644
--- a/Casks/a/affine.rb
+++ b/Casks/a/affine.rb
@@ -17,6 +17,7 @@ cask "affine" do
   end
 
   auto_updates true
+  depends_on macos: ">= :high_sierra"
 
   app "AFFiNE.app"