diff --git a/src/types/enhanced_websocket.rs b/src/types/enhanced_websocket.rs
index 2935a6da..21952419 100644
--- a/src/types/enhanced_websocket.rs
+++ b/src/types/enhanced_websocket.rs
@@ -96,4 +96,5 @@ pub struct RpcTransactionsConfig {
 pub struct TransactionNotification {
     pub transaction: EncodedTransactionWithStatusMeta,
     pub signature: String,
+    pub slot: u64,
 }