diff --git a/tests/core/contracts/test_contract_build_transaction.py b/tests/core/contracts/test_contract_build_transaction.py
index 87f8dcba02..f00768b202 100644
--- a/tests/core/contracts/test_contract_build_transaction.py
+++ b/tests/core/contracts/test_contract_build_transaction.py
@@ -63,7 +63,7 @@ def test_build_transaction_with_contract_no_arguments_no_parens(
         "value": 0,
         "maxFeePerGas": 2750000000,
         "maxPriorityFeePerGas": 10**9,
-        "chainId": 131277322940537,
+        "chainId": w3.eth.chain_id,
     }
 
 
@@ -329,7 +329,7 @@ async def test_async_build_transaction_with_contract_no_arguments_no_parens(
         "value": 0,
         "maxFeePerGas": 2750000000,
         "maxPriorityFeePerGas": 10**9,
-        "chainId": 131277322940537,
+        "chainId": await async_w3.eth.chain_id,
     }
 
 
diff --git a/tests/core/contracts/test_contract_estimate_gas.py b/tests/core/contracts/test_contract_estimate_gas.py
index 3e2fd48fe1..bf6209d7c4 100644
--- a/tests/core/contracts/test_contract_estimate_gas.py
+++ b/tests/core/contracts/test_contract_estimate_gas.py
@@ -213,7 +213,7 @@ async def test_async_estimate_gas_accepts_latest_block(
 async def test_async_estimate_gas_can_be_called_without_parens(
     async_w3, async_math_contract, async_transact
 ):
-    gas_estimate = await async_math_contract.functions.counter.estimate_gas(
+    gas_estimate = await async_math_contract.functions.incrementCounter.estimate_gas(
         block_identifier="latest"
     )