diff --git a/runtime/src/bank/tests.rs b/runtime/src/bank/tests.rs
index b83281a15cbc6b..26606dcb1200b4 100644
--- a/runtime/src/bank/tests.rs
+++ b/runtime/src/bank/tests.rs
@@ -6293,7 +6293,7 @@ fn test_transaction_with_program_ids_passed_to_programs() {
 fn test_account_ids_after_program_ids() {
     solana_logger::setup();
     let (genesis_config, mint_keypair) = create_genesis_config(500);
-    let mut bank = Bank::new_for_tests(&genesis_config);
+    let bank = Bank::new_for_tests(&genesis_config);
 
     let from_pubkey = solana_sdk::pubkey::new_rand();
     let to_pubkey = solana_sdk::pubkey::new_rand();
@@ -6313,6 +6313,9 @@ fn test_account_ids_after_program_ids() {
 
     tx.message.account_keys.push(solana_sdk::pubkey::new_rand());
 
+    let slot = bank.slot().saturating_add(1);
+    let mut bank = Bank::new_from_parent(&Arc::new(bank), &Pubkey::default(), slot);
+
     bank.add_mockup_builtin(solana_vote_program::id(), process_instruction);
     let result = bank.process_transaction(&tx);
     assert_eq!(result, Ok(()));
@@ -6458,7 +6461,7 @@ fn test_program_id_as_payer() {
 #[test]
 fn test_ref_account_key_after_program_id() {
     let (genesis_config, mint_keypair) = create_genesis_config(500);
-    let mut bank = Bank::new_for_tests(&genesis_config);
+    let bank = Bank::new_for_tests(&genesis_config);
 
     let from_pubkey = solana_sdk::pubkey::new_rand();
     let to_pubkey = solana_sdk::pubkey::new_rand();
@@ -6468,6 +6471,9 @@ fn test_ref_account_key_after_program_id() {
         AccountMeta::new(to_pubkey, false),
     ];
 
+    let slot = bank.slot().saturating_add(1);
+    let mut bank = Bank::new_from_parent(&Arc::new(bank), &Pubkey::default(), slot);
+
     bank.add_mockup_builtin(solana_vote_program::id(), process_instruction);
 
     let instruction = Instruction::new_with_bincode(solana_vote_program::id(), &10, account_metas);