diff --git a/Cargo.toml b/Cargo.toml
index b2ab05d..ae0da4e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -5,18 +5,18 @@ edition = "2021"
 
 [dependencies]
 log = "0.4"
-env_logger = "0.10"
+env_logger = "0.11"
 chrono = "0.4"
-url = { version = "2.4.1", features = ["serde"] }
+url = { version = "2.5.0", features = ["serde"] }
 anyhow = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-tokio = { version = "1.0", features = ["full"] }
-solana-client = "1.17"
-solana-sdk = "1.17"
-solana-account-decoder = "1.17"
-solana-transaction-status = "1.17"
+tokio = { version = "1.36", features = ["full"] }
+solana-client = "1.18"
+solana-sdk = "1.18"
+solana-account-decoder = "1.18"
+solana-transaction-status = "1.18"
 spl-token = "4.0"
 base64 = "0.21"
 bs58 = "0.5"
-bincode = "1.3"
+bincode = "1.3"
\ No newline at end of file
diff --git a/src/config.rs b/src/config.rs
index da37216..41378fa 100644
--- a/src/config.rs
+++ b/src/config.rs
@@ -21,7 +21,7 @@ impl Config {
 
         // Fall back to environment variables
         let rpc_url = env::var("SOLANA_RPC_URL")
-            .unwrap_or_else(|_| "https://api.opensvm.com".to_string());
+            .unwrap_or_else(|_| "https://api.mainnet-beta.solana.com".to_string());
             
         let commitment = env::var("SOLANA_COMMITMENT")
             .unwrap_or_else(|_| "confirmed".to_string());
@@ -35,4 +35,4 @@ impl Config {
             protocol_version,
         })
     }
-}
+}
\ No newline at end of file
diff --git a/src/protocol.rs b/src/protocol.rs
index 334d556..c08543b 100644
--- a/src/protocol.rs
+++ b/src/protocol.rs
@@ -2,7 +2,7 @@ use std::collections::HashMap;
 use serde::{Deserialize, Serialize};
 use url::Url;
 
-pub const LATEST_PROTOCOL_VERSION: &str = "2024-11-05";
+pub const LATEST_PROTOCOL_VERSION: &str = "2023-11-15";
 
 #[derive(Debug, Clone, Serialize, Deserialize, Default)]
 #[serde(rename_all = "camelCase")]
@@ -219,4 +219,4 @@ mod tests {
         let json = serde_json::to_string(&capabilities).unwrap();
         assert_eq!(json, "{}");
     }
-}
+}
\ No newline at end of file
diff --git a/src/tools/mod.rs b/src/tools/mod.rs
index a248a39..d6e0e1c 100644
--- a/src/tools/mod.rs
+++ b/src/tools/mod.rs
@@ -35,9 +35,7 @@ pub fn create_error_response(code: i32, message: String, id: u64, protocol_versi
 #[derive(Debug, Deserialize)]
 #[serde(rename_all = "camelCase")]
 struct CancelledParams {
-    #[allow(dead_code)]
     request_id: i64,
-    #[allow(dead_code)]
     reason: String,
 }
 
@@ -224,7 +222,8 @@ pub async fn handle_initialize(params: Option<Value>, id: Option<Value>, state:
 pub async fn handle_cancelled(params: Option<Value>, id: Option<Value>, state: &ServerState) -> Result<JsonRpcMessage> {
     log::info!("Handling cancelled request");
     if let Some(params) = params {
-        let _cancel_params: CancelledParams = serde_json::from_value(params)?;
+        let cancel_params: CancelledParams = serde_json::from_value(params)?;
+        log::info!("Request {} cancelled: {}", cancel_params.request_id, cancel_params.reason);
         Ok(create_success_response(
             Value::Null,
             id.and_then(|v| v.as_u64()).unwrap_or(0)
@@ -529,4 +528,4 @@ pub async fn handle_request(request: &str, state: Arc<RwLock<ServerState>>) -> R
             }
         },
     }
-}
+}
\ No newline at end of file