diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 29be3c5..62c0db4 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -17,23 +17,25 @@ jobs:
     - run: nix fmt . -- --check
     - run: nix flake check
   tests-darwin:
-    runs-on: macos-11
+    runs-on: macos-12
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v22
-      with:
-        extra_nix_config: |
-          system-features = nixos-test recursive-nix benchmark big-parallel kvm
-          extra-experimental-features = recursive-nix nix-command flakes
+    - uses: cachix/install-nix-action@v24
     - run: nix build
     - run: nix build .#doc
     - run: nix fmt . -- --check
     - run: nix flake check
     - name: "Install nix-darwin module"
       run: |
-        system=$(nix build --no-link --print-out-paths .#checks.x86_64-darwin.integration)
-        ${system}/activate-user
-        sudo ${system}/activate
+        # https://github.com/ryantm/agenix/pull/230#issuecomment-1867025385
+
+        sudo mv /etc/nix/nix.conf{,.bak}
+        nix \
+          --extra-experimental-features 'nix-command flakes' \
+          build .#checks.x86_64-darwin.integration
+
+        ./result/activate-user
+        sudo ./result/activate
     - name: "Test nix-darwin module"
       run: |
         sudo /run/current-system/sw/bin/agenix-integration
diff --git a/flake.nix b/flake.nix
index 0b26862..376c2f2 100644
--- a/flake.nix
+++ b/flake.nix
@@ -65,7 +65,9 @@
             inherit system;
             modules = [
               ./test/integration_darwin.nix
-              darwin.darwinModules.simple
+
+              # Allow new-style nix commands in CI
+              {nix.extraOptions = "experimental-features = nix-command flakes";}
 
               home-manager.darwinModules.home-manager
               {