diff --git a/nixos/code.nix b/nixos/code.nix
index 260e6a05..aab35fd9 100644
--- a/nixos/code.nix
+++ b/nixos/code.nix
@@ -42,5 +42,8 @@
     # dhall
     haskellPackages.dhall
     haskellPackages.dhall-json
+
+    # misc
+    perf-tools
   ];
 }