diff --git a/domains/client/block-preprocessor/src/lib.rs b/domains/client/block-preprocessor/src/lib.rs
index de37e7fec5..bc7e98f38d 100644
--- a/domains/client/block-preprocessor/src/lib.rs
+++ b/domains/client/block-preprocessor/src/lib.rs
@@ -18,7 +18,7 @@ use crate::inherents::is_runtime_upgraded;
 use codec::Encode;
 use domain_runtime_primitives::opaque::AccountId;
 use sc_client_api::BlockBackend;
-use sp_api::{ApiError, Core, ProvideRuntimeApi};
+use sp_api::{ApiError, ProvideRuntimeApi};
 use sp_blockchain::HeaderBackend;
 use sp_core::H256;
 use sp_domains::core_api::DomainCoreApi;
@@ -29,8 +29,7 @@ use sp_domains::{
 };
 use sp_messenger::MessengerApi;
 use sp_mmr_primitives::MmrApi;
-use sp_runtime::traits::{Block as BlockT, Hash as HashT, Header, NumberFor};
-use sp_runtime::DigestItem;
+use sp_runtime::traits::{Block as BlockT, Hash as HashT, NumberFor};
 use sp_state_machine::LayoutV1;
 use sp_subspace_mmr::ConsensusChainMmrLeafProof;
 use sp_weights::Weight;
@@ -208,13 +207,6 @@ where
         Vec<InboxedBundle<Block::Hash>>,
         Vec<(Option<AccountId>, Block::Extrinsic)>,
     )> {
-        let consensus_spec_version = self
-            .consensus_client
-            .runtime_api()
-            .version(at_consensus_hash)
-            .map_err(sp_blockchain::Error::RuntimeApiError)?
-            .spec_version;
-
         let mut inboxed_bundles = Vec::with_capacity(bundles.len());
         let mut valid_extrinsics = Vec::new();
 
@@ -230,42 +222,16 @@ where
             // NOTE: The receipt's `domain_block_number` is verified by the consensus runtime while
             // the `domain_block_hash` is not (which is take care of by the fraud proof) so we can't
             // check the parent domain block hash here.
-            // TODO: remove consensus runtime version check before next network
-            if consensus_spec_version >= 6
-                && bundle.receipt().domain_block_number != parent_domain_number
-            {
-                // If there consensus runtime just upgraded to spec version 6, which bring the receipt
-                // gap check, the bundle that included in the same block is doesn't perform the check
-                // because the new runtime take effect in the next block so skip the check here too.
-                let is_consensus_runtime_upgraded_to_6 = {
-                    let consensus_header = self
-                        .consensus_client
-                        .header(at_consensus_hash)?
-                        .ok_or_else(|| {
-                            sp_blockchain::Error::Backend(format!(
-                                "Consensus block header of {at_consensus_hash:?} unavailable"
-                            ))
-                        })?;
-
-                    let runtime_upgraded = consensus_header
-                        .digest()
-                        .logs()
-                        .iter()
-                        .any(|di| di == &DigestItem::RuntimeEnvironmentUpdated);
-
-                    runtime_upgraded && consensus_spec_version == 6
-                };
-                if !is_consensus_runtime_upgraded_to_6 {
-                    return Err(sp_blockchain::Error::RuntimeApiError(
-                        ApiError::Application(
-                            format!(
-                                "Unexpected bundle in consensus block: {:?}, something must be wrong",
-                                at_consensus_hash
-                            )
-                            .into(),
-                        ),
-                    ));
-                }
+            if bundle.receipt().domain_block_number != parent_domain_number {
+                return Err(sp_blockchain::Error::RuntimeApiError(
+                    ApiError::Application(
+                        format!(
+                            "Unexpected bundle in consensus block: {:?}, something must be wrong",
+                            at_consensus_hash
+                        )
+                        .into(),
+                    ),
+                ));
             }
 
             let extrinsic_root = bundle.extrinsics_root();