diff --git a/nix-darwin/homebrew.nix b/nix-darwin/homebrew.nix
index ca21d1e..ad558d4 100644
--- a/nix-darwin/homebrew.nix
+++ b/nix-darwin/homebrew.nix
@@ -62,7 +62,6 @@
     taps = [
       "koekeishiya/formulae"
       "railwaycat/emacsmacport"
-      "homebrew/cask"
     ];
   };
 }