diff --git a/crates/ethereum/node/src/node.rs b/crates/ethereum/node/src/node.rs
index 0962d8f6f2..25ce4f995d 100644
--- a/crates/ethereum/node/src/node.rs
+++ b/crates/ethereum/node/src/node.rs
@@ -333,7 +333,8 @@ where
     }
 }
 
-impl<N, EthB, PVB, EB, EVB> EngineValidatorAddOn<N> for EthereumAddOns<N, EthB, PVB, EB, EVB>
+impl<N, EthB, PVB, EB, EVB, RpcMiddleware> EngineValidatorAddOn<N>
+    for EthereumAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware>
 where
     N: FullNodeComponents<
         Types: NodeTypes<
@@ -349,6 +350,7 @@ where
     EVB: EngineValidatorBuilder<N>,
     EthApiError: FromEvmError<N::Evm>,
     EvmFactoryFor<N::Evm>: EvmFactory<Tx = TxEnv>,
+    RpcMiddleware: Send,
 {
     type ValidatorBuilder = EVB;
 
diff --git a/crates/node/builder/src/rpc.rs b/crates/node/builder/src/rpc.rs
index 59696419b5..f9186feb88 100644
--- a/crates/node/builder/src/rpc.rs
+++ b/crates/node/builder/src/rpc.rs
@@ -1180,13 +1180,15 @@ pub trait EngineValidatorAddOn<Node: FullNodeComponents>: Send {
     fn engine_validator_builder(&self) -> Self::ValidatorBuilder;
 }
 
-impl<N, EthB, PVB, EB, EVB> EngineValidatorAddOn<N> for RpcAddOns<N, EthB, PVB, EB, EVB>
+impl<N, EthB, PVB, EB, EVB, RpcMiddleware> EngineValidatorAddOn<N>
+    for RpcAddOns<N, EthB, PVB, EB, EVB, RpcMiddleware>
 where
     N: FullNodeComponents,
     EthB: EthApiBuilder<N>,
     PVB: Send,
     EB: EngineApiBuilder<N>,
     EVB: EngineValidatorBuilder<N>,
+    RpcMiddleware: Send,
 {
     type ValidatorBuilder = EVB;
 
diff --git a/crates/optimism/node/src/node.rs b/crates/optimism/node/src/node.rs
index 5f69ef2eba..21a1efd041 100644
--- a/crates/optimism/node/src/node.rs
+++ b/crates/optimism/node/src/node.rs
@@ -620,14 +620,15 @@ where
     }
 }
 
-impl<N, NetworkT, PVB, EB, EVB> EngineValidatorAddOn<N>
-    for OpAddOns<N, OpEthApiBuilder<NetworkT>, PVB, EB, EVB>
+impl<N, NetworkT, PVB, EB, EVB, RpcMiddleware> EngineValidatorAddOn<N>
+    for OpAddOns<N, OpEthApiBuilder<NetworkT>, PVB, EB, EVB, RpcMiddleware>
 where
     N: FullNodeComponents,
     OpEthApiBuilder<NetworkT>: EthApiBuilder<N>,
     PVB: Send,
     EB: EngineApiBuilder<N>,
     EVB: EngineValidatorBuilder<N>,
+    RpcMiddleware: Send,
 {
     type ValidatorBuilder = EVB;