diff --git a/client/src/nonblocking/quic_client.rs b/client/src/nonblocking/quic_client.rs
index c3b769c286..0d8bd36b9a 100644
--- a/client/src/nonblocking/quic_client.rs
+++ b/client/src/nonblocking/quic_client.rs
@@ -25,7 +25,10 @@ use {
         signature::Keypair,
         transport::Result as TransportResult,
     },
-    solana_streamer::tls_certificates::new_self_signed_tls_certificate_chain,
+    solana_streamer::{
+        nonblocking::quic::ALPN_TPU_PROTOCOL_ID,
+        tls_certificates::new_self_signed_tls_certificate_chain,
+    },
     std::{
         net::{IpAddr, Ipv4Addr, SocketAddr, UdpSocket},
         sync::{atomic::Ordering, Arc},
@@ -92,6 +95,7 @@ impl QuicLazyInitializedEndpoint {
             )
             .expect("Failed to set QUIC client certificates");
         crypto.enable_early_data = true;
+        crypto.alpn_protocols = vec![ALPN_TPU_PROTOCOL_ID.to_vec()];
 
         let mut endpoint =
             QuicNewConnection::create_endpoint(EndpointConfig::default(), client_socket);
diff --git a/streamer/src/nonblocking/quic.rs b/streamer/src/nonblocking/quic.rs
index 302c9ba397..63a6db2233 100644
--- a/streamer/src/nonblocking/quic.rs
+++ b/streamer/src/nonblocking/quic.rs
@@ -38,6 +38,8 @@ use {
 const QUIC_TOTAL_STAKED_CONCURRENT_STREAMS: f64 = 100_000f64;
 const WAIT_FOR_STREAM_TIMEOUT_MS: u64 = 100;
 
+pub const ALPN_TPU_PROTOCOL_ID: &[u8] = b"solana-tpu";
+
 #[allow(clippy::too_many_arguments)]
 pub fn spawn_server(
     sock: UdpSocket,
@@ -721,6 +723,7 @@ pub mod test {
             .expect("Failed to use client certificate");
 
         crypto.enable_early_data = true;
+        crypto.alpn_protocols = vec![ALPN_TPU_PROTOCOL_ID.to_vec()];
 
         let mut config = ClientConfig::new(Arc::new(crypto));
 
diff --git a/streamer/src/quic.rs b/streamer/src/quic.rs
index 5c6a64cd89..bfc445444a 100644
--- a/streamer/src/quic.rs
+++ b/streamer/src/quic.rs
@@ -1,5 +1,8 @@
 use {
-    crate::{streamer::StakedNodes, tls_certificates::new_self_signed_tls_certificate_chain},
+    crate::{
+        nonblocking::quic::ALPN_TPU_PROTOCOL_ID, streamer::StakedNodes,
+        tls_certificates::new_self_signed_tls_certificate_chain,
+    },
     crossbeam_channel::Sender,
     pem::Pem,
     quinn::{IdleTimeout, ServerConfig, VarInt},
@@ -67,11 +70,12 @@ pub(crate) fn configure_server(
         .collect();
     let cert_chain_pem = pem::encode_many(&cert_chain_pem_parts);
 
-    let server_tls_config = rustls::ServerConfig::builder()
+    let mut server_tls_config = rustls::ServerConfig::builder()
         .with_safe_defaults()
         .with_client_cert_verifier(SkipClientVerification::new())
         .with_single_cert(cert_chain, priv_key)
         .map_err(|_e| QuicServerError::ConfigureFailed)?;
+    server_tls_config.alpn_protocols = vec![ALPN_TPU_PROTOCOL_ID.to_vec()];
 
     let mut server_config = ServerConfig::with_crypto(Arc::new(server_tls_config));
     let config = Arc::get_mut(&mut server_config.transport).unwrap();