diff --git a/.forgejo/workflows/ci.yaml b/.forgejo/workflows/ci.yaml
new file mode 100644
index 0000000..19f341b
--- /dev/null
+++ b/.forgejo/workflows/ci.yaml
@@ -0,0 +1,18 @@
+name: Test build & run
+
+on: [push]
+
+jobs:
+  build-run:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+      - name: Setup Deno 2
+        uses: denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
+      - name: Build using Cargo
+        run: cargo build --verbose
+      - name: Run unit tests
+        run: cargo test --verbose
diff --git a/src/known_software.rs b/src/known_software.rs
index eb9883b..9e4b3c6 100644
--- a/src/known_software.rs
+++ b/src/known_software.rs
@@ -98,3 +98,17 @@ impl<'r> FromParam<'r> for KnownInstanceSoftware<'r> {
         }
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    /// If this test fails, known-software.json is invalid
+    #[test]
+    fn known_software_is_valid() {
+        assert!(!KNOWN_SOFTWARE.groups.is_empty());
+        assert!(!KNOWN_SOFTWARE.software.is_empty());
+        assert!(!KNOWN_SOFTWARE_NAMES.is_empty());
+        assert!(!KNOWN_SOFTWARE_NODEINFO_NAMES.is_empty());
+    }
+}