diff --git a/shell.nix b/shell.nix
index cd833d9..d59e633 100644
--- a/shell.nix
+++ b/shell.nix
@@ -1,4 +1,4 @@
 { pkgs ? import <nixpkgs> {} }:
   pkgs.mkShell {
-    nativeBuildInputs = with pkgs.python311Packages; [ websockets watchdog pyperclip timeout-decorator ];
+    nativeBuildInputs = with pkgs.python311Packages; [ websockets watchdog pyperclip pyparsing ];
   }