diff --git a/deploy-config/devnetL2.json b/deploy-config/devnetL2.json
index 64ae1e8..d5b0d8a 100644
--- a/deploy-config/devnetL2.json
+++ b/deploy-config/devnetL2.json
@@ -1,5 +1,7 @@
 {
   "enableShutter": true,
+  "l1Blocktime": 12,
+  "l2Blocktime": 6,
   "shutterBlockGasLimit": 5000000,
   "shutterDaoAddress": "0x2a0D87eA3a9E0ca33Ddd4a62C33878b58152effE",
   "shutterSequencerAddress": "0x2a0D87eA3a9E0ca33Ddd4a62C33878b58152effE"