diff --git a/.gitignore b/.gitignore
index a7f9bdb..ce5c88d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,6 +6,7 @@
 
 # coverage
 *coverage*
+logs/
 
 # VSCode
 .vscode/*
diff --git a/etherscan/enums/fields_enum.py b/etherscan/enums/fields_enum.py
index b0bcc4d..d4442c2 100644
--- a/etherscan/enums/fields_enum.py
+++ b/etherscan/enums/fields_enum.py
@@ -9,6 +9,7 @@ class FieldsEnum:
     BLOCK_TYPE: str = "&blocktype="
     BLOCKNO: str = "&blockno="
     BOOLEAN: str = "&boolean="
+    CHAIN_ID: str = "&chainid="
     CLIENT_TYPE: str = "&clienttype="
     CLOSEST: str = "&closest="
     CONTRACT_ADDRESS: str = "&contractaddress="
@@ -23,7 +24,7 @@ class FieldsEnum:
     OFFSET: str = "&offset="
     PAGE: str = "&page="
     POSITION: str = "&position="
-    PREFIX: str = "https://api-{}.etherscan.io/api?"
+    PREFIX: str = "https://api-{}.etherscan.io/v2/api?"
     SORT: str = "&sort="
     START_BLOCK: str = "&startblock="
     START_DATE: str = "&startdate="
diff --git a/etherscan/etherscan.py b/etherscan/etherscan.py
index 5749aa8..35df73c 100644
--- a/etherscan/etherscan.py
+++ b/etherscan/etherscan.py
@@ -10,10 +10,12 @@
 
 
 class Etherscan:
-    def __new__(cls, api_key: str, net: str = "MAIN"):
+    def __new__(cls, api_key: str, net: str = "MAIN", chain_id: str = "1"):
         with resources.path(configs, f"{net.upper()}-stable.json") as path:
             config_path = str(path)
-        return cls.from_config(api_key=api_key, config_path=config_path, net=net)
+        return cls.from_config(
+            api_key=api_key, chain_id=chain_id, config_path=config_path, net=net
+        )
 
     @staticmethod
     def __load_config(config_path: str) -> dict:
@@ -21,11 +23,13 @@ def __load_config(config_path: str) -> dict:
             return json.load(f)
 
     @staticmethod
-    def __run(func, api_key: str, net: str):
+    def __run(func, api_key: str, net: str, chain_id: str):
         def wrapper(*args, **kwargs):
             url = (
                 f"{fields.PREFIX.format(net.lower()).replace('-main','')}"
                 f"{func(*args, **kwargs)}"
+                f"{fields.CHAIN_ID}"
+                f"{chain_id}"
                 f"{fields.API_KEY}"
                 f"{api_key}"
             )
@@ -35,10 +39,10 @@ def wrapper(*args, **kwargs):
         return wrapper
 
     @classmethod
-    def from_config(cls, api_key: str, config_path: str, net: str):
+    def from_config(cls, api_key: str, config_path: str, net: str, chain_id: str):
         config = cls.__load_config(config_path)
         for func, v in config.items():
             if not func.startswith("_"):  # disabled if _
                 attr = getattr(getattr(etherscan, v["module"]), func)
-                setattr(cls, func, cls.__run(attr, api_key, net))
+                setattr(cls, func, cls.__run(attr, api_key, net, chain_id))
         return cls