diff --git a/src/digest_engine/sha2.rs b/src/digest_engine/sha2.rs
index e22ecbd..ba8c89e 100644
--- a/src/digest_engine/sha2.rs
+++ b/src/digest_engine/sha2.rs
@@ -1,6 +1,4 @@
 use std::io;
-use sha2::{Digest, Sha256};
-use sha2::{Digest, Sha256};
 
 #[derive(Debug, Eq, PartialEq, Clone, Default)]
 pub struct DigestEngineSha256 {