diff --git a/mainnet_v1/docker-compose.yml b/mainnet_v1/docker-compose.yml
index 9ad1fa7..5d42204 100644
--- a/mainnet_v1/docker-compose.yml
+++ b/mainnet_v1/docker-compose.yml
@@ -4,7 +4,7 @@ version: '3.9'
 services:
   gw-readonly:
     container_name: gw-mainnet_v1-readonly
-    image: ghcr.io/godwokenrises/godwoken-prebuilds:1.7.0-poly.1.4.5
+    image: ghcr.io/godwokenrises/godwoken-prebuilds:1.7.1-poly1.5.0
     expose: [8119, 8219]
     healthcheck:
       test: /bin/gw-healthcheck.sh
diff --git a/mainnet_v1/gw-mainnet_v1-config-readonly.toml b/mainnet_v1/gw-mainnet_v1-config-readonly.toml
index 53039e5..5184fe8 100644
--- a/mainnet_v1/gw-mainnet_v1-config-readonly.toml
+++ b/mainnet_v1/gw-mainnet_v1-config-readonly.toml
@@ -13,58 +13,52 @@ enable_methods = []
 # [p2p_network_config]
 # dial = ["/dns4/godwoken/tcp/9999"]
 
-[[backend_switches]]
-switch_height = 0
-[[backend_switches.backends]]
+
+[fork]
+increase_max_l2_tx_cycles_to_500m = 233000
+
+[[fork.backend_forks]]
+fork_height = 0
+[[fork.backend_forks.backends]]
 validator_path = '/scripts/godwoken-scripts/meta-contract-validator'
 generator_path = '/scripts/godwoken-scripts/meta-contract-generator'
 validator_script_type_hash = '0x2c0b586137cb942f92cc3f84f62d77924b560e4088667f6f47012ecfa828e184'
 backend_type = 'Meta'
-[[backend_switches.backends]]
+[[fork.backend_forks.backends]]
 validator_path = '/scripts/godwoken-scripts/sudt-validator'
 generator_path = '/scripts/godwoken-scripts/sudt-generator'
 validator_script_type_hash = '0x990027acd7058ec1b45df9d7448c0c5407fc17dde4b9b769f594d613c8053084'
 backend_type = 'Sudt'
-[[backend_switches.backends]]
+[[fork.backend_forks.backends]]
 validator_path = '/scripts/godwoken-scripts/eth-addr-reg-validator'
 generator_path = '/scripts/godwoken-scripts/eth-addr-reg-generator'
 validator_script_type_hash = '0xc55c5ede907d13ac1e744cff8ce4386b9dc5aad905d8f3badfd9419efe49eeb2'
 backend_type = 'EthAddrReg'
-[[backend_switches.backends]]
+[[fork.backend_forks.backends]]
 # https://github.com/nervosnetwork/godwoken-polyjuice/releases/tag/1.4.1
 validator_path = '/scripts/godwoken-polyjuice-v1.4.1/validator'
 generator_path = '/scripts/godwoken-polyjuice-v1.4.1/generator'
 validator_script_type_hash = '0x83d5d8841518e8db686909d27c821398491f475ed5f1cd392c36e83f4252c4ac'
 backend_type = 'Polyjuice'
 
-# TODO: remove the useless backend version
-# [[backend_switches]]
-# switch_height = 186750
-# [[backend_switches.backends]]
-# # https://github.com/nervosnetwork/godwoken-polyjuice/releases/tag/1.4.2
-# validator_path = '/scripts/godwoken-polyjuice-v1.4.2/validator'
-# generator_path = '/scripts/godwoken-polyjuice-v1.4.2/generator'
-# validator_script_type_hash = '0x83d5d8841518e8db686909d27c821398491f475ed5f1cd392c36e83f4252c4ac'
-# backend_type = 'Polyjuice'
-
-[[backend_switches]]
-switch_height = 186758
-[[backend_switches.backends]]
-# https://github.com/nervosnetwork/godwoken-polyjuice/releases/tag/1.4.4
-validator_path = '/scripts/godwoken-polyjuice-v1.4.4/validator'
-generator_path = '/scripts/godwoken-polyjuice-v1.4.4/generator'
-validator_script_type_hash = '0x83d5d8841518e8db686909d27c821398491f475ed5f1cd392c36e83f4252c4ac'
-backend_type = 'Polyjuice'
-
-[[backend_switches]]
-switch_height = 204000
-[[backend_switches.backends]]
+[[fork.backend_forks]]
+fork_height = 186758
+[[fork.backend_forks.backends]]
 # https://github.com/godwokenrises/godwoken-polyjuice/releases/tag/1.4.5
 validator_path = '/scripts/godwoken-polyjuice-v1.4.5/validator'
 generator_path = '/scripts/godwoken-polyjuice-v1.4.5/generator'
 validator_script_type_hash = '0x83d5d8841518e8db686909d27c821398491f475ed5f1cd392c36e83f4252c4ac'
 backend_type = 'Polyjuice'
 
+[[fork.backend_forks]]
+fork_height = 233000
+[[fork.backend_forks.backends]]
+# https://github.com/godwokenrises/godwoken-polyjuice/releases/tag/1.5.0
+validator_path = '/scripts/godwoken-polyjuice-v1.5.0/validator'
+generator_path = '/scripts/godwoken-polyjuice-v1.5.0/generator'
+validator_script_type_hash = '0x83d5d8841518e8db686909d27c821398491f475ed5f1cd392c36e83f4252c4ac'
+backend_type = 'Polyjuice'
+
 
 [genesis]
 timestamp = 1655830128000