diff --git a/client/src/rpc_client.rs b/client/src/rpc_client.rs
index 67d71a39cc287e..fa249dc1b79104 100644
--- a/client/src/rpc_client.rs
+++ b/client/src/rpc_client.rs
@@ -4335,7 +4335,10 @@ mod tests {
                         ReturnDataEncoding::Base64,
                     );
                     serde_json::to_value(Response {
-                        context: RpcResponseContext { slot: 1 },
+                        context: RpcResponseContext {
+                            slot: 1,
+                            api_version: None,
+                        },
                         value: RpcSimulateTransactionResult {
                             err: None,
                             logs: None,