diff --git a/.gitignore b/.gitignore
index d59c72e..5acc1bb 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,6 +14,7 @@ examples/http/proxy
 examples/http/poll_loop.py
 examples/tcp/tcp.wasm
 examples/tcp/command
+examples/cli-p3/cli.wasm
 examples/cli/cli.wasm
 examples/cli/command
 examples/sandbox/sandbox
diff --git a/Cargo.lock b/Cargo.lock
index 8bfb5fe..fe89d03 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -477,7 +477,7 @@ dependencies = [
 
 [[package]]
 name = "componentize-py"
-version = "0.20.0"
+version = "0.21.0"
 dependencies = [
  "anyhow",
  "assert_cmd",
diff --git a/examples/cli-p3/app.py b/examples/cli-p3/app.py
index fd4184e..caf22c7 100644
--- a/examples/cli-p3/app.py
+++ b/examples/cli-p3/app.py
@@ -1,5 +1,5 @@
 from wit_world import exports
 
 class Run(exports.Run):
-    async def run(self):
+    async def run(self) -> None:
         print("Hello, world!")
diff --git a/tests/bindings.rs b/tests/bindings.rs
index 2b583d8..51e92db 100644
--- a/tests/bindings.rs
+++ b/tests/bindings.rs
@@ -29,6 +29,27 @@ fn lint_cli_bindings() -> anyhow::Result<()> {
     Ok(())
 }
 
+#[test]
+fn lint_cli_p3_bindings() -> anyhow::Result<()> {
+    let dir = tempfile::tempdir()?;
+    fs_extra::copy_items(
+        &["./examples/cli-p3", "./wit"],
+        dir.path(),
+        &CopyOptions::new(),
+    )?;
+    let path = dir.path().join("cli-p3");
+
+    generate_bindings(&path, "wasi:cli/command@0.3.0-rc-2026-01-06")?;
+
+    assert!(predicate::path::is_dir().eval(&path.join("wit_world")));
+
+    _ = dir.keep();
+
+    mypy_check(&path, ["--strict", "-m", "app"]);
+
+    Ok(())
+}
+
 #[test]
 fn lint_http_bindings() -> anyhow::Result<()> {
     let dir = tempfile::tempdir()?;
diff --git a/tests/componentize.rs b/tests/componentize.rs
index e1fa63c..383b405 100644
--- a/tests/componentize.rs
+++ b/tests/componentize.rs
@@ -14,13 +14,22 @@ use tar::Archive;
 
 #[test]
 fn cli_example() -> anyhow::Result<()> {
+    test_cli_example("cli", "wasi:cli/command@0.2.0")
+}
+
+#[test]
+fn cli_p3_example() -> anyhow::Result<()> {
+    test_cli_example("cli-p3", "wasi:cli/command@0.3.0-rc-2026-01-06")
+}
+
+fn test_cli_example(name: &str, world: &str) -> anyhow::Result<()> {
     let dir = tempfile::tempdir()?;
     fs_extra::copy_items(
-        &["./examples/cli", "./wit"],
+        &[format!("./examples/{name}").as_str(), "./wit"],
         dir.path(),
         &CopyOptions::new(),
     )?;
-    let path = dir.path().join("cli");
+    let path = dir.path().join(name);
 
     cargo::cargo_bin_cmd!("componentize-py")
         .current_dir(&path)
@@ -28,7 +37,7 @@ fn cli_example() -> anyhow::Result<()> {
             "-d",
             "../wit",
             "-w",
-            "wasi:cli/command@0.2.0",
+            world,
             "componentize",
             "app",
             "-o",
@@ -40,7 +49,7 @@ fn cli_example() -> anyhow::Result<()> {
 
     Command::new("wasmtime")
         .current_dir(&path)
-        .args(["run", "cli.wasm"])
+        .args(["run", "-Sp3", "-Wcomponent-model-async", "cli.wasm"])
         .assert()
         .success()
         .stdout("Hello, world!\n");