diff --git a/crates/rpc/rpc-api/src/debug.rs b/crates/rpc/rpc-api/src/debug.rs
index a8960d4524..0a9c0c266f 100644
--- a/crates/rpc/rpc-api/src/debug.rs
+++ b/crates/rpc/rpc-api/src/debug.rs
@@ -2,7 +2,7 @@ use alloy_eip7928::BlockAccessList;
 use alloy_eips::{BlockId, BlockNumberOrTag};
 use alloy_genesis::ChainConfig;
 use alloy_json_rpc::RpcObject;
-use alloy_primitives::{Address, Bytes, B256};
+use alloy_primitives::{Address, Bytes, B256, U64};
 use alloy_rpc_types_debug::ExecutionWitness;
 use alloy_rpc_types_eth::{Bundle, StateContext};
 use alloy_rpc_types_trace::geth::{
@@ -325,7 +325,7 @@ pub trait DebugApi<TxReq: RpcObject> {
     /// Sets the current head of the local chain by block number. Note, this is a destructive action
     /// and may severely damage your chain. Use with extreme caution.
     #[method(name = "setHead")]
-    async fn debug_set_head(&self, number: u64) -> RpcResult<()>;
+    async fn debug_set_head(&self, number: U64) -> RpcResult<()>;
 
     /// Sets the rate of mutex profiling.
     #[method(name = "setMutexProfileFraction")]
diff --git a/crates/rpc/rpc/src/debug.rs b/crates/rpc/rpc/src/debug.rs
index 7c3d488933..74231b4b14 100644
--- a/crates/rpc/rpc/src/debug.rs
+++ b/crates/rpc/rpc/src/debug.rs
@@ -3,7 +3,7 @@ use alloy_eip7928::BlockAccessList;
 use alloy_eips::{eip2718::Encodable2718, BlockId, BlockNumberOrTag};
 use alloy_evm::env::BlockEnvironment;
 use alloy_genesis::ChainConfig;
-use alloy_primitives::{hex::decode, uint, Address, Bytes, B256};
+use alloy_primitives::{hex::decode, uint, Address, Bytes, B256, U64};
 use alloy_rlp::{Decodable, Encodable};
 use alloy_rpc_types::BlockTransactionsKind;
 use alloy_rpc_types_debug::ExecutionWitness;
@@ -998,7 +998,7 @@ where
         Ok(())
     }
 
-    async fn debug_set_head(&self, _number: u64) -> RpcResult<()> {
+    async fn debug_set_head(&self, _number: U64) -> RpcResult<()> {
         Ok(())
     }