diff --git a/starknet-providers/src/jsonrpc/mod.rs b/starknet-providers/src/jsonrpc/mod.rs
index 4817e3af..17b9d82b 100644
--- a/starknet-providers/src/jsonrpc/mod.rs
+++ b/starknet-providers/src/jsonrpc/mod.rs
@@ -30,7 +30,7 @@ pub struct JsonRpcClient<T> {
     transport: T,
 }
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Clone, Copy, Serialize, Deserialize)]
 pub enum JsonRpcMethod {
     #[serde(rename = "starknet_getBlockWithTxHashes")]
     GetBlockWithTxHashes,
@@ -177,7 +177,7 @@ where
 {
     async fn send_request<P, R>(&self, method: JsonRpcMethod, params: P) -> Result<R, ProviderError>
     where
-        P: Serialize + Send,
+        P: Serialize + Send + Sync,
         R: DeserializeOwned,
     {
         match self
diff --git a/starknet-providers/src/jsonrpc/transports/mod.rs b/starknet-providers/src/jsonrpc/transports/mod.rs
index 723d3e4b..7b119f74 100644
--- a/starknet-providers/src/jsonrpc/transports/mod.rs
+++ b/starknet-providers/src/jsonrpc/transports/mod.rs
@@ -20,6 +20,6 @@ pub trait JsonRpcTransport {
         params: P,
     ) -> Result<JsonRpcResponse<R>, Self::Error>
     where
-        P: Serialize + Send,
+        P: Serialize + Send + Sync,
         R: DeserializeOwned;
 }