diff --git a/.github/workflows/nix-auto.yml b/.github/workflows/nix-auto.yml
index eee0bfa..59b5e21 100644
--- a/.github/workflows/nix-auto.yml
+++ b/.github/workflows/nix-auto.yml
@@ -30,4 +30,4 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v27
-      - run: nix build -L '.githubActions.checks.#${{ matrix.attr }}'
\ No newline at end of file
+      - run: nix build -L '.#githubActions.checks.${{ matrix.attr }}'
\ No newline at end of file
diff --git a/ddtrace.nix b/ddtrace.nix
index 053603e..243cf6d 100644
--- a/ddtrace.nix
+++ b/ddtrace.nix
@@ -34,7 +34,8 @@ let
         setuptools
         setuptools_scm
         cython
-      ]);
+      ])
+      ++ lib.optionals stdenv.isDarwin [ darwin.apple_sdk.frameworks.IOKit ];
 
     propagatedBuildInputs = with python.pkgs; [
       attrs