diff --git a/crates/testing/src/block_builder/simple.rs b/crates/testing/src/block_builder/simple.rs
index 10ea1132dd..e1207a4fc2 100644
--- a/crates/testing/src/block_builder/simple.rs
+++ b/crates/testing/src/block_builder/simple.rs
@@ -141,7 +141,7 @@ where
         &self,
         _parent_view: u64,
         _parent_hash: &VidCommitment,
-        _view_number: u64,
+        view_number: u64,
     ) -> Result<Bundle<TYPES>, BuildError> {
         let transactions = self
             .transactions
@@ -170,6 +170,7 @@ where
             fee_signature: TYPES::BuilderSignatureKey::sign_sequencing_fee_marketplace(
                 &self.priv_key.clone(),
                 fee_amount,
+                view_number,
             )
             .expect("Failed to sign fee!"),
         };
diff --git a/crates/types/src/data.rs b/crates/types/src/data.rs
index db891c8a0b..71b682aa19 100644
--- a/crates/types/src/data.rs
+++ b/crates/types/src/data.rs
@@ -801,7 +801,7 @@ pub mod null_block {
     use crate::{
         traits::{
             block_contents::BuilderFee,
-            node_implementation::{NodeType, Versions},
+            node_implementation::{ConsensusTime, NodeType, Versions},
             signature_key::BuilderSignatureKey,
             BlockPayload,
         },
@@ -840,8 +840,11 @@ pub mod null_block {
             );
 
         if version >= V::Marketplace::VERSION {
-            match TYPES::BuilderSignatureKey::sign_sequencing_fee_marketplace(&priv_key, FEE_AMOUNT)
-            {
+            match TYPES::BuilderSignatureKey::sign_sequencing_fee_marketplace(
+                &priv_key,
+                FEE_AMOUNT,
+                *TYPES::View::genesis(),
+            ) {
                 Ok(sig) => Some(BuilderFee {
                     fee_amount: FEE_AMOUNT,
                     fee_account: pub_key,
diff --git a/crates/types/src/traits/signature_key.rs b/crates/types/src/traits/signature_key.rs
index e9133e9286..52503c0cd5 100644
--- a/crates/types/src/traits/signature_key.rs
+++ b/crates/types/src/traits/signature_key.rs
@@ -227,8 +227,12 @@ pub trait BuilderSignatureKey:
         &self,
         signature: &Self::BuilderSignature,
         fee_amount: u64,
+        view_number: u64,
     ) -> bool {
-        self.validate_builder_signature(signature, &fee_amount.to_be_bytes())
+        self.validate_builder_signature(
+            signature,
+            &aggregate_fee_data_marketplace(fee_amount, view_number),
+        )
     }
 
     /// validate the bundle's signature using the builder's public key
@@ -285,12 +289,15 @@ pub trait BuilderSignatureKey:
     /// sign fee offer for proposed payload (marketplace version)
     /// # Errors
     /// If unable to sign the data with the key
-    // TODO: this should include view number
     fn sign_sequencing_fee_marketplace(
         private_key: &Self::BuilderPrivateKey,
         fee_amount: u64,
+        view_number: u64,
     ) -> Result<Self::BuilderSignature, Self::SignError> {
-        Self::sign_builder_message(private_key, &fee_amount.to_be_bytes())
+        Self::sign_builder_message(
+            private_key,
+            &aggregate_fee_data_marketplace(fee_amount, view_number),
+        )
     }
 
     /// sign transactions (marketplace version)
@@ -340,6 +347,14 @@ fn aggregate_fee_data<Metadata: EncodeBytes>(
     fee_info
 }
 
+/// Aggregate all inputs used for signature over fee data
+fn aggregate_fee_data_marketplace(fee_amount: u64, view_number: u64) -> Vec<u8> {
+    let mut fee_info = Vec::new();
+    fee_info.extend_from_slice(fee_amount.to_be_bytes().as_ref());
+    fee_info.extend_from_slice(view_number.to_be_bytes().as_ref());
+    fee_info
+}
+
 /// Aggregate all inputs used for signature over block info
 fn aggregate_block_info_data(
     block_size: u64,