diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
new file mode 100644
index 0000000..8ec0fb3
--- /dev/null
+++ b/.github/workflows/ci.yaml
@@ -0,0 +1,22 @@
+name: CI
+
+on:
+  pull_request:
+  schedule: [ cron: "40 1 * * *" ]
+
+permissions:
+  contents: read
+
+env:
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+      - uses: Swatinem/rust-cache@v2
+      - run: cargo fmt -- --check
+      - run: cargo build
diff --git a/src/lambda_invoker.rs b/src/lambda_invoker.rs
index 1346543..63709ea 100644
--- a/src/lambda_invoker.rs
+++ b/src/lambda_invoker.rs
@@ -23,7 +23,7 @@ impl LambdaInvoker {
         }
     }
 
-    pub async fn iterate(&self, iterations: u8) -> Result<(), anyhow::Error> {
+    pub async fn iterate(&self, iterations: u16) -> Result<(), anyhow::Error> {
         let config = self.get_function_configuration().await?;
         let mut env = config
             .environment
@@ -110,12 +110,8 @@ impl LambdaInvoker {
             Some(last_update_status) => {
                 info!("Checking if last update is successful: {last_update_status}");
                 match last_update_status {
-                    LastUpdateStatus::Successful => {
-                        Ok(true)
-                    }
-                    LastUpdateStatus::Failed | LastUpdateStatus::InProgress => {
-                        Ok(false)
-                    }
+                    LastUpdateStatus::Successful => Ok(true),
+                    LastUpdateStatus::Failed | LastUpdateStatus::InProgress => Ok(false),
                     unknown => {
                         warn!("LastUpdateStatus unknown: {unknown}");
                         Err(anyhow!("Unknown LastUpdateStatus, fn config is {config:?}"))