diff --git a/Cargo.lock b/Cargo.lock
index 02e16f38..b1f66358 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3967,7 +3967,7 @@ checksum = "a2eb9349b6444b326872e140eb1cf5e7c522154d69e7a0ffb0fb81c06b37543f"
 
 [[package]]
 name = "steward"
-version = "4.1.0"
+version = "4.1.1"
 dependencies = [
  "abscissa_core",
  "abscissa_tokio",
diff --git a/Cargo.toml b/Cargo.toml
index 15416ebb..315752c6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,7 +1,7 @@
 [package]
 name = "steward"
 authors = []
-version = "4.1.0"
+version = "4.1.1"
 edition = "2021"
 
 [dependencies]
diff --git a/src/server.rs b/src/server.rs
index 72c37703..1962841a 100644
--- a/src/server.rs
+++ b/src/server.rs
@@ -117,6 +117,8 @@ pub(crate) async fn auth_config(
         _ => panic!("cannot parse private key .pem file"),
     };
     let mut server_config = rustls::ServerConfig::new(client_auth);
+    let alpn_protocols: Vec<u8> = "h2".into();
+    server_config.set_protocols(&[alpn_protocols]);
     server_config.set_single_cert(cert, key).unwrap();
 
     Ok(server_config)