diff --git a/tuic-client/src/connection/mod.rs b/tuic-client/src/connection/mod.rs
index a6586e88..c2bf422b 100644
--- a/tuic-client/src/connection/mod.rs
+++ b/tuic-client/src/connection/mod.rs
@@ -39,7 +39,7 @@ static CONNECTION: AsyncOnceCell<AsyncRwLock<Connection>> = AsyncOnceCell::const
 static TIMEOUT: AtomicCell<Duration> = AtomicCell::new(Duration::from_secs(0));
 
 pub const ERROR_CODE: VarInt = VarInt::from_u32(0);
-const DEFAULT_CONCURRENT_STREAMS: u32 = 32;
+const DEFAULT_CONCURRENT_STREAMS: u32 = 512;
 
 #[derive(Clone)]
 pub struct Connection {
diff --git a/tuic-server/src/connection/mod.rs b/tuic-server/src/connection/mod.rs
index 9ab14c65..10c11102 100644
--- a/tuic-server/src/connection/mod.rs
+++ b/tuic-server/src/connection/mod.rs
@@ -20,7 +20,7 @@ mod handle_task;
 mod udp_session;
 
 pub const ERROR_CODE: VarInt = VarInt::from_u32(0);
-pub const DEFAULT_CONCURRENT_STREAMS: u32 = 32;
+pub const DEFAULT_CONCURRENT_STREAMS: u32 = 512;
 
 #[derive(Clone)]
 pub struct Connection {