diff --git a/src/hiero_sdk_python/consensus/topic_create_transaction.py b/src/hiero_sdk_python/consensus/topic_create_transaction.py
index 82be5de98..45083c8be 100644
--- a/src/hiero_sdk_python/consensus/topic_create_transaction.py
+++ b/src/hiero_sdk_python/consensus/topic_create_transaction.py
@@ -11,6 +11,7 @@
 
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.channels import _Channel
+from hiero_sdk_python.crypto.key import Key
 from hiero_sdk_python.Duration import Duration
 from hiero_sdk_python.executable import _Method
 from hiero_sdk_python.hapi.services import consensus_create_topic_pb2, transaction_pb2
@@ -19,7 +20,7 @@
 )
 from hiero_sdk_python.tokens.custom_fixed_fee import CustomFixedFee
 from hiero_sdk_python.transaction.transaction import Transaction
-from hiero_sdk_python.utils.key_utils import Key, key_to_proto
+from hiero_sdk_python.utils.key_utils import key_to_proto
 
 
 class TopicCreateTransaction(Transaction):
diff --git a/src/hiero_sdk_python/tokens/token_create_transaction.py b/src/hiero_sdk_python/tokens/token_create_transaction.py
index 1f8e363e5..bd0dc8790 100644
--- a/src/hiero_sdk_python/tokens/token_create_transaction.py
+++ b/src/hiero_sdk_python/tokens/token_create_transaction.py
@@ -18,6 +18,7 @@
 
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.channels import _Channel
+from hiero_sdk_python.crypto.key import Key
 from hiero_sdk_python.Duration import Duration
 from hiero_sdk_python.executable import _Method
 from hiero_sdk_python.hapi.services import token_create_pb2, transaction_pb2
@@ -29,7 +30,7 @@
 from hiero_sdk_python.tokens.supply_type import SupplyType
 from hiero_sdk_python.tokens.token_type import TokenType
 from hiero_sdk_python.transaction.transaction import Transaction
-from hiero_sdk_python.utils.key_utils import Key, key_to_proto
+from hiero_sdk_python.utils.key_utils import key_to_proto
 
 
 AUTO_RENEW_PERIOD = Duration(7890000)  # around 90 days in seconds
diff --git a/src/hiero_sdk_python/tokens/token_update_transaction.py b/src/hiero_sdk_python/tokens/token_update_transaction.py
index 5f0af078d..3361858dc 100644
--- a/src/hiero_sdk_python/tokens/token_update_transaction.py
+++ b/src/hiero_sdk_python/tokens/token_update_transaction.py
@@ -14,6 +14,7 @@
 
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.channels import _Channel
+from hiero_sdk_python.crypto.key import Key
 from hiero_sdk_python.Duration import Duration
 from hiero_sdk_python.executable import _Method
 from hiero_sdk_python.hapi.services import token_update_pb2, transaction_pb2
@@ -25,7 +26,7 @@
 from hiero_sdk_python.tokens.token_id import TokenId
 from hiero_sdk_python.tokens.token_key_validation import TokenKeyValidation
 from hiero_sdk_python.transaction.transaction import Transaction
-from hiero_sdk_python.utils.key_utils import Key, key_to_proto
+from hiero_sdk_python.utils.key_utils import key_to_proto
 
 
 @dataclass
diff --git a/src/hiero_sdk_python/transaction/transaction.py b/src/hiero_sdk_python/transaction/transaction.py
index 7b1369de9..692877c20 100644
--- a/src/hiero_sdk_python/transaction/transaction.py
+++ b/src/hiero_sdk_python/transaction/transaction.py
@@ -5,6 +5,7 @@
 
 from hiero_sdk_python.account.account_id import AccountId
 from hiero_sdk_python.client.client import Client
+from hiero_sdk_python.crypto.key import Key
 from hiero_sdk_python.exceptions import PrecheckError
 from hiero_sdk_python.executable import _Executable, _ExecutionState
 from hiero_sdk_python.hapi.services import basic_types_pb2, transaction_contents_pb2, transaction_pb2
@@ -15,7 +16,7 @@
 from hiero_sdk_python.transaction.transaction_id import TransactionId
 from hiero_sdk_python.transaction.transaction_receipt import TransactionReceipt
 from hiero_sdk_python.transaction.transaction_response import TransactionResponse
-from hiero_sdk_python.utils.key_utils import Key, key_to_proto
+from hiero_sdk_python.utils.key_utils import key_to_proto
 
 
 if TYPE_CHECKING: