diff --git a/.gitea/workflows/check.yml b/.gitea/workflows/check.yml
new file mode 100644
index 0000000..f5a47fe
--- /dev/null
+++ b/.gitea/workflows/check.yml
@@ -0,0 +1,18 @@
+name: "Check"
+on:
+  pull_request:
+  push:
+jobs:
+  check:
+    runs-on: debian-latest
+    steps:
+    - uses: actions/checkout@v6
+
+    - name: Install sudo
+      run: apt-get update && apt-get -y install sudo
+
+    - name: Install nix
+      uses: https://github.com/cachix/install-nix-action@v31
+
+    - name: Check code
+      run: nix develop .# --command uiua check