diff --git a/modules/hm/development/rust.nix b/modules/hm/development/rust.nix
index a5140b9..b10836c 100644
--- a/modules/hm/development/rust.nix
+++ b/modules/hm/development/rust.nix
@@ -17,7 +17,7 @@ let tomlGenerate = (pkgs.formats.toml { }).generate; in
   ++ lib.optionals config.programs.helix.enable (builtins.attrValues { inherit (pkgs) lldb rust-analyzer; })
   ++ lib.optionals config.programs.kakoune.enable (builtins.attrValues { inherit (pkgs) rust-analyzer; });
 
-  home.file.".cargo/config".source = tomlGenerate "cargo-config" {
+  home.file.".cargo/config.toml".source = tomlGenerate "cargo-config" {
     build.rustc-wrapper = "${pkgs.sccache}/bin/sccache";
   };