diff --git a/chains/devnet/genesis.json b/chains/devnet/genesis.json
index 3fa9f51..ed93486 100644
--- a/chains/devnet/genesis.json
+++ b/chains/devnet/genesis.json
@@ -44,7 +44,7 @@
     "nonce": "0x0",
     "timestamp": "0x0",
     "extraData": "0x",
-    "gasLimit": "0x7a1200",
+    "gasLimit": "0x1312D00",
     "difficulty": "0x0",
     "mixHash": "0x0000000000000000000000000000000000000000000000000000000000000000",
     "coinbase": "0x0000000000000000000000000000000000000000",
diff --git a/rpc/rpc_test.py b/rpc/rpc_test.py
index c3561e8..ea616e7 100644
--- a/rpc/rpc_test.py
+++ b/rpc/rpc_test.py
@@ -37,19 +37,18 @@ def test_functionality(rpc_url):
         print(f"RPC request failed, Error: {str(e)}")
 
 
-def test_chain_id(rpc_url, chain_id):
+def test_chain_id(rpc_url, expected_chain_id):
     payload = {
         "jsonrpc": "2.0",
         "method": "eth_chainId",
-        "id": chain_id,
+        "params": [],
+        "id": 1,
     }
-
-    try:
-        response = requests.post(rpc_url, json=payload)
-        response_data = response.json()
-        print("RPC request successful, Response Data:", response_data)
-    except Exception as e:
-        print(f"RPC request failed, Error: {str(e)}")
+    response = requests.post(rpc_url, json=payload)
+    response_data = response.json()
+    actual_chain_id = int(response_data["result"], 16)
+    assert actual_chain_id == expected_chain_id, \
+        f"Chain ID mismatch: expected {expected_chain_id}, got {actual_chain_id}"
 
 
 if __name__ == '__main__':