diff --git a/jam/src/main.rs b/jam/src/main.rs
index dbb512e..4c96be1 100644
--- a/jam/src/main.rs
+++ b/jam/src/main.rs
@@ -1,7 +1,6 @@
 use jam::block::{Block, BlockHeader, Extrinsic};
 use jam::blockchain::Blockchain;
 use jam::config::Config;
-use serde_json;
 use std::fs;
 use tokio::time::{sleep, Duration};