diff --git a/util/constant/src/hardfork/testnet.rs b/util/constant/src/hardfork/testnet.rs
index 6f2b061368..febc68d198 100644
--- a/util/constant/src/hardfork/testnet.rs
+++ b/util/constant/src/hardfork/testnet.rs
@@ -8,4 +8,8 @@ pub const RFC0028_RFC0032_RFC0033_RFC0034_START_EPOCH: u64 = 3113;
 pub const CKB2021_START_EPOCH: u64 = 0;
 
 /// hardcode ckb2023 epoch
-pub const CKB2023_START_EPOCH: u64 = u64::MAX;
+/// 2024/02/05 7:44 utc
+/// |            hash                                                    |  number   |    timestamp    | epoch |
+/// | 0x4014244087d989355c1d06311f3f73582607d4c991e03296f703f9221f77aabe | 11937425  |  1704944649417  |  9074 |
+/// 1704944649417 + 151 * 4 * 60 * 60 * 1000 = 1707119049417  2024/02/05 7:44 utc
+pub const CKB2023_START_EPOCH: u64 = 9225;