diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
deleted file mode 100644
index 03438cc..0000000
--- a/.github/workflows/ci.yaml
+++ /dev/null
@@ -1,35 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches: [main]
-  pull_request:
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout the code
-        uses: actions/checkout@v3
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v22
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-          install_url: https://releases.nixos.org/nix/nix-2.16.0/install
-          extra_nix_config: |
-            extra-trusted-public-keys = hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=
-            extra-substituters = https://cache.iog.io
-            experimental-features = nix-command flakes
-
-      - name: Build Nix Shell
-        run: |
-          nix build .#devShells.x86_64-linux.default
-
-      - name: Build Marlowe Payouts (with Nix)
-        run: |
-          nix build .#marlowe-payouts -L
-
-      - name: Build Marlowe Payouts (inside nix develop)
-        run: |
-          nix develop --command bash -c 'npm install && npm run build'
\ No newline at end of file
diff --git a/flake.lock b/flake.lock
index 1ebde0b..5ec0605 100644
--- a/flake.lock
+++ b/flake.lock
@@ -490,11 +490,11 @@
         "sphinxcontrib-haddock": "sphinxcontrib-haddock"
       },
       "locked": {
-        "lastModified": 1697628614,
-        "narHash": "sha256-9T8zPc1cwf9xsfZ9XWn8pQaN+pmp5sabzm8iRNEESUQ=",
+        "lastModified": 1698143770,
+        "narHash": "sha256-5CGqQI9QcLR/434OuubLOoLznEdxN2HUxctoFFu+PUs=",
         "owner": "input-output-hk",
         "repo": "iogx",
-        "rev": "274cf3e3b33ac151e0cae54848f7c2ea9232f1e2",
+        "rev": "6257702889f22c468071985a7c1bc0677e50d7d3",
         "type": "github"
       },
       "original": {
diff --git a/nix/marlowe-payouts.nix b/nix/marlowe-payouts.nix
index 977eec2..86e39eb 100644
--- a/nix/marlowe-payouts.nix
+++ b/nix/marlowe-payouts.nix
@@ -28,7 +28,10 @@ pkgs.buildNpmPackage {
   nativeBuildInputs = [
     pkgs.nodejs_18
     pkgs.nodejs_18.pkgs.webpack-cli
-    pkgs.python39
+    pkgs.python310
+  ] ++ lib.optionals pkgs.stdenv.isDarwin [
+    # Needed by node-gyp on macOS, which uses the xcrun program.
+    pkgs.xcbuild
   ];
 
   buildPhase = ''
diff --git a/nix/outputs.nix b/nix/outputs.nix
index 3d5d962..707582a 100644
--- a/nix/outputs.nix
+++ b/nix/outputs.nix
@@ -5,5 +5,9 @@
     devShells.default = repoRoot.nix.shell;
 
     packages.marlowe-payouts = repoRoot.nix.marlowe-payouts;
+
+    hydraJobs.devShells.default = repoRoot.nix.shell;
+    hydraJobs.marlowe-payouts = repoRoot.nix.marlowe-payouts;
+    hydraJobs.required = lib.iogx.mkHydraRequiredJob { };
   }
 ]