diff --git a/params/chainspecs/pulsechain-testnet-v4.json b/params/chainspecs/pulsechain-testnet-v4.json
index 89b74b3cc..11eb18c14 100644
--- a/params/chainspecs/pulsechain-testnet-v4.json
+++ b/params/chainspecs/pulsechain-testnet-v4.json
@@ -26,5 +26,6 @@
       "addr": "0xA592ED65885bcbCeb30442F4902a0D1Cf3AcB8fC",
       "balance": "0x314DC6448D9338C15B0A00000000"
     }
-  }
+  },
+  "shanghaiTime": 1682700369
 }
\ No newline at end of file