diff --git a/flake.nix b/flake.nix
index 53cbae9..5310c46 100644
--- a/flake.nix
+++ b/flake.nix
@@ -40,6 +40,9 @@
             # TOML
             check-toml.enable = true;
 
+            # YAML
+            check-yaml.enable = true;
+
             # Nix
             deadnix.enable = true;
             flake-checker.enable = true;
@@ -57,6 +60,14 @@
                 pkg-config
               ];
             };
+            rustfmt.enable = true;
+            cargo-check = {
+              enable = true;
+              extraPackages = with pkgs; [
+                pkg-config
+                openssl
+              ];
+            };
 
             # SQL
             sqlfluff = {