diff --git a/chain/aioz/param_2.json b/chain/aioz/param_2.json
index 5b4db54c7b..0658dc90d2 100644
--- a/chain/aioz/param_2.json
+++ b/chain/aioz/param_2.json
@@ -34,7 +34,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint" : [
diff --git a/chain/haqq/param_2.json b/chain/haqq/param_2.json
index 3bf079f13d..3f1ccc5430 100644
--- a/chain/haqq/param_2.json
+++ b/chain/haqq/param_2.json
@@ -37,7 +37,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint" : [
diff --git a/chain/realio/param_2.json b/chain/realio/param_2.json
index ed9e5aed6c..61f31ec6eb 100644
--- a/chain/realio/param_2.json
+++ b/chain/realio/param_2.json
@@ -36,7 +36,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint" : [
diff --git a/chain/routerchain/param_2.json b/chain/routerchain/param_2.json
index f529cca0fe..7134cc20a7 100644
--- a/chain/routerchain/param_2.json
+++ b/chain/routerchain/param_2.json
@@ -35,7 +35,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint" : [
diff --git a/chain/tabichain-testnet/param_2.json b/chain/tabichain-testnet/param_2.json
index da405da223..b223445046 100644
--- a/chain/tabichain-testnet/param_2.json
+++ b/chain/tabichain-testnet/param_2.json
@@ -33,7 +33,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint": [
diff --git a/chain/tenet/param_2.json b/chain/tenet/param_2.json
index 9d0dfd6fd2..0b7fbea2d5 100644
--- a/chain/tenet/param_2.json
+++ b/chain/tenet/param_2.json
@@ -34,7 +34,7 @@
         "fee_threshold" : ""
     },
     "evm_fee_info" : {
-        "is_eip1559": false,
+        "is_eip1559": true,
         "simulated_gas_multiply" : 1.2
     },
     "grpc_endpoint" : [