diff --git a/crates/astria-sequencer/CHANGELOG.md b/crates/astria-sequencer/CHANGELOG.md
index 9e18802d9..c7616d6a2 100644
--- a/crates/astria-sequencer/CHANGELOG.md
+++ b/crates/astria-sequencer/CHANGELOG.md
@@ -15,6 +15,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Bump penumbra dependencies [#1740](https://github.com/astriaorg/astria/pull/1740).
 - Move fee event recording to transaction from block [#1718](https://github.com/astriaorg/astria/pull/1718).
+- Nonce replacment for pending transactions is now allowed in the mempool [#1763](https://github.com/astriaorg/astria/pull/1763).
 
 ## [1.0.0-rc.2] - 2024-10-23
 
diff --git a/crates/astria-sequencer/src/mempool/transactions_container.rs b/crates/astria-sequencer/src/mempool/transactions_container.rs
index 5e5852b0e..a2cb62c17 100644
--- a/crates/astria-sequencer/src/mempool/transactions_container.rs
+++ b/crates/astria-sequencer/src/mempool/transactions_container.rs
@@ -1612,14 +1612,8 @@ mod tests {
         let account_balances = mock_balances(1, 1);
 
         // create two transactions with same nonce but different hash
-        let tx_0 = MockTTXBuilder::new()
-            .nonce(0)
-            .group(Group::UnbundleableSudo)
-            .build();
-        let tx_1 = MockTTXBuilder::new()
-            .nonce(0)
-            .group(Group::UnbundleableGeneral)
-            .build();
+        let tx_0 = MockTTXBuilder::new().nonce(0).chain_id("test-0").build();
+        let tx_1 = MockTTXBuilder::new().nonce(0).chain_id("test-1").build();
 
         // add first transaction
         pending_txs.add(tx_0.clone(), 0, &account_balances).unwrap();