diff --git a/.github/workflows/CI.yml b/.github/workflows/ci.yml
similarity index 89%
rename from .github/workflows/CI.yml
rename to .github/workflows/ci.yml
index 169d665..d9c290f 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/ci.yml
@@ -42,3 +42,7 @@ jobs:
     - uses: actions/checkout@main
     - name: Run tests
       run: cargo test --verbose --all-features
+    - name: Run example
+      run: |
+        cargo run --bin example > log
+        grep '^Got 33$' log
diff --git a/example/Cargo.toml b/example/Cargo.toml
index fb2768a..f814437 100644
--- a/example/Cargo.toml
+++ b/example/Cargo.toml
@@ -10,5 +10,5 @@ license = "MIT"
 [dependencies]
 tokio = { version = "1.0", features = [ "full" ] }
 tokio-stream = { version = "0.1", features = [ "net" ] }
-tonic = "0.7"
-tonic-rpc = { path = "../tonic-rpc" }
+tonic = "0.8"
+tonic-rpc = { path = "../tonic-rpc", features = ["json"] }
diff --git a/example/src/example.rs b/example/src/example.rs
index cf48229..3e95a90 100644
--- a/example/src/example.rs
+++ b/example/src/example.rs
@@ -1,4 +1,3 @@
-#![cfg(feature = "json")]
 use tokio::net::TcpListener;
 use tokio_stream::wrappers::TcpListenerStream;
 use tonic::transport::Server;
@@ -29,7 +28,7 @@ impl increment_server::Increment for State {
 }
 
 /// Run the server.
-async fn run_server() {
+pub(crate) async fn run_server() {
     let listener = TcpListener::bind("[::1]:8080").await.unwrap();
     let addr = listener.local_addr().unwrap();
     tokio::spawn(async move {
diff --git a/example/src/main.rs b/example/src/main.rs
index 021af13..d656255 100644
--- a/example/src/main.rs
+++ b/example/src/main.rs
@@ -1,8 +1,6 @@
-#[cfg(feature = "json")]
+mod example;
+
 #[tokio::main]
 async fn main() {
-    example::run_server()
+    example::run_server().await
 }
-
-#[cfg(not(feature = "json"))]
-fn main() {}