diff --git a/neo-gui/protocol.testnet.json b/neo-gui/protocol.testnet.json
index 4d7f5821..5f01e505 100644
--- a/neo-gui/protocol.testnet.json
+++ b/neo-gui/protocol.testnet.json
@@ -4,7 +4,7 @@
     "AddressVersion": 23,
     "SecondsPerBlock": 15,
     "LowPriorityThreshold": 0.001,
-    "StateRootEnableIndex": 4380000,
+    "StateRootEnableIndex": 4380100,
     "StandbyValidators": [
       "0327da12b5c40200e9f65569476bbff2218da4f32548ff43b6387ec1416a231ee8",
       "026ce35b29147ad09e4afe4ec4a7319095f08198fa8babbe3c56e970b143528d22",