diff --git a/cmd/gen_devnet/main.go b/cmd/gen_devnet/main.go
index 129102bb0..a6a1968fb 100644
--- a/cmd/gen_devnet/main.go
+++ b/cmd/gen_devnet/main.go
@@ -75,7 +75,7 @@ func main() {
 		bnbBeaconChainConfig.UpgradeConfig.BEP159Height = 3
 		bnbBeaconChainConfig.UpgradeConfig.BEP159Phase2Height = 6
 		bnbBeaconChainConfig.UpgradeConfig.LimitConsAddrUpdateIntervalHeight = 6
-		bnbBeaconChainConfig.BreatheBlockInterval = 5
+		bnbBeaconChainConfig.BreatheBlockInterval = 15
 		appConfigFilePath := filepath.Join(ctxConfig.RootDir, "config", "app.toml")
 		config.WriteConfigFile(appConfigFilePath, bnbBeaconChainConfig)
 		// pk