diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
new file mode 100644
index 0000000..592fc95
--- /dev/null
+++ b/.github/workflows/main.yml
@@ -0,0 +1,18 @@
+name: "Test"
+on:
+  pull_request:
+  push:
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: cachix/install-nix-action@v25
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - uses: cachix/cachix-action@v14
+        with:
+          name: suntheme
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+      - run: nix build --accept-flake-config
+      - run: nix develop --accept-flake-config
diff --git a/flake.nix b/flake.nix
index e0bd1d9..c985748 100644
--- a/flake.nix
+++ b/flake.nix
@@ -49,8 +49,8 @@
       });
 
   nixConfig = {
-    extra-substituters = ["https://cache.iog.io"];
-    extra-trusted-public-keys = ["hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="];
+    extra-substituters = ["https://cache.iog.io" "https://suntheme.cachix.org"];
+    extra-trusted-public-keys = ["hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ=" "suntheme.cachix.org-1:fHjlz7YAmMUcLp3tsZis8g9wIsDS6HvECGR3uZETGRo="];
     allow-import-from-derivation = "true";
   };
 }