diff --git a/nix/pkgs/main/default.nix b/nix/pkgs/main/default.nix
index 91b775a4..0c6c7baa 100644
--- a/nix/pkgs/main/default.nix
+++ b/nix/pkgs/main/default.nix
@@ -20,6 +20,7 @@ craneLib.buildPackage rec {
     root = inputs.self;
     include = [
       "src"
+      "hot_lib"
       "Cargo.toml"
       "Cargo.lock"
     ];