diff --git a/packages/default.nix b/packages/default.nix
index 3c66915..8d18bee 100644
--- a/packages/default.nix
+++ b/packages/default.nix
@@ -80,6 +80,7 @@ in
       "p7zip"
       "pinentry"
       "rust-analyzer"
+      "rustfmt"
       "rustup"
       "tinymist"
       "unzip"