diff --git a/crates/anvil/src/eth/backend/mem/mod.rs b/crates/anvil/src/eth/backend/mem/mod.rs
index 555bcf86de48b..80ec1aa72ab38 100644
--- a/crates/anvil/src/eth/backend/mem/mod.rs
+++ b/crates/anvil/src/eth/backend/mem/mod.rs
@@ -29,6 +29,7 @@ use crate::{
     },
     NodeConfig,
 };
+use alloy_primitives::B256;
 use anvil_core::{
     eth::{
         block::{Block, BlockInfo, Header},