diff --git a/nixos/modules/development.nix b/nixos/modules/development.nix
index fdb78a6..e041461 100644
--- a/nixos/modules/development.nix
+++ b/nixos/modules/development.nix
@@ -15,7 +15,7 @@
 
     languagePackages = {
       rust = with pkgs; [ rustup cargo-deny cargo-edit ];
-      python = with pkgs; [ python3 python3Packages.pip python3Packages.virtualenv uv ];
+      python = with pkgs; [ python3 python3Packages.pip python3Packages.virtualenv uv mypy ];
       nodejs = with pkgs; [ nodejs pnpm ];
       go = with pkgs; [ go golangci-lint ];
       ruby = with pkgs; [ ruby bundler ];