From 1888517502bd576be0f6bcaeca9062bface1efda Mon Sep 17 00:00:00 2001
From: Eval EXEC <execvy@gmail.com>
Date: Mon, 20 Nov 2023 15:41:52 +0800
Subject: [PATCH] Fix ci CheckVmBExtension

---
 test/src/specs/hardfork/v2021/vm_b_extension.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/src/specs/hardfork/v2021/vm_b_extension.rs b/test/src/specs/hardfork/v2021/vm_b_extension.rs
index ac9a3d080b..22882c4140 100644
--- a/test/src/specs/hardfork/v2021/vm_b_extension.rs
+++ b/test/src/specs/hardfork/v2021/vm_b_extension.rs
@@ -74,6 +74,7 @@ impl Spec for CheckVmBExtension {
     fn modify_chain_spec(&self, spec: &mut ckb_chain_spec::ChainSpec) {
         spec.params.permanent_difficulty_in_dummy = Some(true);
         spec.params.genesis_epoch_length = Some(GENESIS_EPOCH_LENGTH);
+        spec.params.epoch_duration_target = Some(GENESIS_EPOCH_LENGTH * 8);
     }
 }