diff --git a/ethcore/res/instant_seal.json b/ethcore/res/instant_seal.json
index e01c927ff..acd1b49ed 100644
--- a/ethcore/res/instant_seal.json
+++ b/ethcore/res/instant_seal.json
@@ -24,7 +24,7 @@
 		"timestamp": "0x00",
 		"parentHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
 		"extraData": "0x",
-		"gasLimit": "0x5B8D80"
+		"gasLimit": "0x7A1200"
 	},
 	"accounts": {
 		"0000000000000000000000000000000000000001": { "balance": "1", "builtin": { "name": "ecrecover", "pricing": { "linear": { "base": 3000, "word": 0 } } } },