diff --git a/Casks/kicad-cn.rb b/Casks/kicad-cn.rb
index 39f92c5..01c0de8 100644
--- a/Casks/kicad-cn.rb
+++ b/Casks/kicad-cn.rb
@@ -10,7 +10,7 @@
 
   livecheck do
     url "https://mirrors.tuna.tsinghua.edu.cn/kicad/osx/stable/"
-    regex(/kicad-unified-universal-(\d+(?:\.\d+)+)/i)
+    regex(/kicad-unified-universal-(\d+(?:\.\d+)+(-rc\d+)?)/i)
   end
 
   depends_on macos: ">= :big_sur"