diff --git a/scripts/utils/constants.py b/scripts/utils/constants.py
index e31be7f..128b307 100644
--- a/scripts/utils/constants.py
+++ b/scripts/utils/constants.py
@@ -1,8 +1,8 @@
 from os.path import abspath, dirname, join
 
-BASE_DIR = join(dirname(abspath(__file__)), "..")
+from eth.constants import ZERO_ADDRESS
 
-ZERO_ADDRESS = "0x0000000000000000000000000000000000000000"
+BASE_DIR = join(dirname(abspath(__file__)), "..")
 
 ADDRESS_PROVIDER = "0x0000000022D53366457F9d5E68Ec105046FC4383"
 STABLE_REGISTRY_ADDRESS = "0x90E00ACe148ca3b23Ac1bC8C240C2a7Dd9c2d7f5"
diff --git a/tests/mainnet/metaregistry/api/test_find_pool_for_coins.py b/tests/mainnet/metaregistry/api/test_find_pool_for_coins.py
index 85b0e79..1715c2f 100644
--- a/tests/mainnet/metaregistry/api/test_find_pool_for_coins.py
+++ b/tests/mainnet/metaregistry/api/test_find_pool_for_coins.py
@@ -2,8 +2,7 @@
 from os import environ
 
 import pytest
-
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 # NOTE: This is the most important method in the metaregistry contract since it will be used
 # by integrators to find pools for coin pairs. It finds pools even if the coin pair is not
diff --git a/tests/mainnet/metaregistry/api/test_get_base_pool.py b/tests/mainnet/metaregistry/api/test_get_base_pool.py
index c96d80a..278a8a3 100644
--- a/tests/mainnet/metaregistry/api/test_get_base_pool.py
+++ b/tests/mainnet/metaregistry/api/test_get_base_pool.py
@@ -1,4 +1,4 @@
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def test_all(populated_metaregistry, populated_base_pool_registry, pool):
diff --git a/tests/mainnet/metaregistry/api/test_get_coin_indices.py b/tests/mainnet/metaregistry/api/test_get_coin_indices.py
index 2121745..73c41bd 100644
--- a/tests/mainnet/metaregistry/api/test_get_coin_indices.py
+++ b/tests/mainnet/metaregistry/api/test_get_coin_indices.py
@@ -2,8 +2,7 @@
 import warnings
 
 import pytest
-
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def _reject_pools_with_one_coin(metaregistry, pool):
diff --git a/tests/mainnet/metaregistry/api/test_get_gauge.py b/tests/mainnet/metaregistry/api/test_get_gauge.py
index a7d8067..a06bf1c 100644
--- a/tests/mainnet/metaregistry/api/test_get_gauge.py
+++ b/tests/mainnet/metaregistry/api/test_get_gauge.py
@@ -1,6 +1,5 @@
 from boa import BoaError
-
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def _is_dao_onboarded_gauge(_gauge, gauge_controller, liquidity_gauge):
diff --git a/tests/mainnet/metaregistry/api/test_get_n_coins.py b/tests/mainnet/metaregistry/api/test_get_n_coins.py
index 37a183b..91fd545 100644
--- a/tests/mainnet/metaregistry/api/test_get_n_coins.py
+++ b/tests/mainnet/metaregistry/api/test_get_n_coins.py
@@ -1,4 +1,4 @@
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def _get_n_coins_for_pool(registry, pool):
diff --git a/tests/mainnet/metaregistry/api/test_get_n_underlying_coins.py b/tests/mainnet/metaregistry/api/test_get_n_underlying_coins.py
index 9ca6ccc..ff2caca 100644
--- a/tests/mainnet/metaregistry/api/test_get_n_underlying_coins.py
+++ b/tests/mainnet/metaregistry/api/test_get_n_underlying_coins.py
@@ -1,4 +1,4 @@
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def _get_num_coins(registry, pool, base_pool_registry):
diff --git a/tests/mainnet/metaregistry/api/test_get_pool_name.py b/tests/mainnet/metaregistry/api/test_get_pool_name.py
index 6a56e2f..fafbfc4 100644
--- a/tests/mainnet/metaregistry/api/test_get_pool_name.py
+++ b/tests/mainnet/metaregistry/api/test_get_pool_name.py
@@ -1,5 +1,6 @@
+from eth.constants import ZERO_ADDRESS
+
 from scripts.deployment_utils import get_deployed_contract
-from scripts.utils.constants import ZERO_ADDRESS
 
 
 def test_stable_registry_pools(
diff --git a/tests/mainnet/metaregistry/api/test_get_underlying_balances.py b/tests/mainnet/metaregistry/api/test_get_underlying_balances.py
index 013a0c1..3731299 100644
--- a/tests/mainnet/metaregistry/api/test_get_underlying_balances.py
+++ b/tests/mainnet/metaregistry/api/test_get_underlying_balances.py
@@ -2,9 +2,9 @@
 
 import pytest
 from boa import BoaError
+from eth.constants import ZERO_ADDRESS
 
 from scripts.utils import get_deployed_contract
-from scripts.utils.constants import ZERO_ADDRESS
 from tests.utils import assert_negative_coin_balance
 
 EXCEPTION_POOLS = ["0x79a8C46DeA5aDa233ABaFFD40F3A0A2B1e5A4F27"]
diff --git a/tests/mainnet/metaregistry/api/test_get_underlying_coins.py b/tests/mainnet/metaregistry/api/test_get_underlying_coins.py
index 379c6f1..214499c 100644
--- a/tests/mainnet/metaregistry/api/test_get_underlying_coins.py
+++ b/tests/mainnet/metaregistry/api/test_get_underlying_coins.py
@@ -2,8 +2,7 @@
 
 import boa
 from boa import BoaError
-
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def _get_underlying_coins(
diff --git a/tests/mainnet/metaregistry/api/test_get_underlying_decimals.py b/tests/mainnet/metaregistry/api/test_get_underlying_decimals.py
index afe1854..117179f 100644
--- a/tests/mainnet/metaregistry/api/test_get_underlying_decimals.py
+++ b/tests/mainnet/metaregistry/api/test_get_underlying_decimals.py
@@ -1,8 +1,8 @@
 import pytest
 from boa import BoaError
+from eth.constants import ZERO_ADDRESS
 
 from scripts.utils import get_deployed_contract
-from scripts.utils.constants import ZERO_ADDRESS
 
 EXCEPTIONS = {
     # eth: ankreth pool returns [18, 0] when it should return:
diff --git a/tests/mainnet/metaregistry/api/test_get_virtual_price.py b/tests/mainnet/metaregistry/api/test_get_virtual_price.py
index 0f95efd..33fb6ec 100644
--- a/tests/mainnet/metaregistry/api/test_get_virtual_price.py
+++ b/tests/mainnet/metaregistry/api/test_get_virtual_price.py
@@ -4,9 +4,9 @@
 import pytest
 from boa import BoaError
 from eth.codecs.abi.exceptions import DecodeError as ABIDecodeError
+from eth.constants import ZERO_ADDRESS
 
 from scripts.utils import get_deployed_contract
-from scripts.utils.constants import ZERO_ADDRESS
 from tests.utils import assert_decode_error, assert_negative_coin_balance
 
 # ---- sanity checks since vprice getters can revert for specific pools states ----
diff --git a/tests/mainnet/metaregistry/api/test_pool_is_metapool.py b/tests/mainnet/metaregistry/api/test_pool_is_metapool.py
index 89f59f7..08a8cf6 100644
--- a/tests/mainnet/metaregistry/api/test_pool_is_metapool.py
+++ b/tests/mainnet/metaregistry/api/test_pool_is_metapool.py
@@ -1,4 +1,4 @@
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def test_stable_registry_pools(
diff --git a/tests/mainnet/metaregistry/test_base_registry_tracking.py b/tests/mainnet/metaregistry/test_base_registry_tracking.py
index 6c889b3..e5fe376 100644
--- a/tests/mainnet/metaregistry/test_base_registry_tracking.py
+++ b/tests/mainnet/metaregistry/test_base_registry_tracking.py
@@ -1,4 +1,4 @@
-from scripts.utils.constants import ZERO_ADDRESS
+from eth.constants import ZERO_ADDRESS
 
 
 def test_new_crypto_factory_pool(
diff --git a/tests/mainnet/registries/test_add_remove_basepool.py b/tests/mainnet/registries/test_add_remove_basepool.py
index d7b2468..c645631 100644
--- a/tests/mainnet/registries/test_add_remove_basepool.py
+++ b/tests/mainnet/registries/test_add_remove_basepool.py
@@ -1,6 +1,6 @@
 import boa
+from eth.constants import ZERO_ADDRESS
 
-from scripts.utils.constants import ZERO_ADDRESS
 from tests.utils import deploy_contract
 
 
diff --git a/tests/mainnet/registries/test_add_remove_metapool.py b/tests/mainnet/registries/test_add_remove_metapool.py
index a988761..568ddca 100644
--- a/tests/mainnet/registries/test_add_remove_metapool.py
+++ b/tests/mainnet/registries/test_add_remove_metapool.py
@@ -1,6 +1,6 @@
 import boa
+from eth.constants import ZERO_ADDRESS
 
-from scripts.utils.constants import ZERO_ADDRESS
 from tests.utils import deploy_contract
 
 
diff --git a/tests/mainnet/registries/test_add_remove_pool.py b/tests/mainnet/registries/test_add_remove_pool.py
index 982176a..59707fa 100644
--- a/tests/mainnet/registries/test_add_remove_pool.py
+++ b/tests/mainnet/registries/test_add_remove_pool.py
@@ -1,6 +1,6 @@
 import boa
+from eth.constants import ZERO_ADDRESS
 
-from scripts.utils.constants import ZERO_ADDRESS
 from tests.utils import deploy_contract