diff --git a/mainnet-genesis.json b/mainnet-genesis.json
index 6c6657b0d7..f7dabdacb2 100644
--- a/mainnet-genesis.json
+++ b/mainnet-genesis.json
@@ -77,7 +77,7 @@
             "EIP158": 0,
             "EIP155": 0,
             "portland": 1981991,
-            "detroit": 4116385
+            "detroit": 4490834
         },
         "chainID": 2000,
         "engine": {