diff --git a/yandexcloud/_operation_waiter.py b/yandexcloud/_operation_waiter.py
index 865082e9..0b0fe11d 100644
--- a/yandexcloud/_operation_waiter.py
+++ b/yandexcloud/_operation_waiter.py
@@ -56,11 +56,11 @@ def get_operation_result(
     meta_type: Optional[Type["MetaType"]] = None,
     timeout: Optional[float] = None,
     logger: Optional[logging.Logger] = None,
-) -> Union["OperationResult", "OperationError"]:
+) -> Union["OperationResult[ResponseType, MetaType]", "OperationError"]:
     if not logger:
         logger = logging.getLogger()
         logger.addHandler(logging.NullHandler())
-    operation_result = OperationResult(operation)
+    operation_result: OperationResult[ResponseType, MetaType] = OperationResult(operation)
     created_at = datetime.fromtimestamp(operation.created_at.seconds)
     message = (
         "Running Yandex.Cloud operation. ID: {id}. "
diff --git a/yandexcloud/_sdk.py b/yandexcloud/_sdk.py
index a3e3ff4a..73d4a3a8 100644
--- a/yandexcloud/_sdk.py
+++ b/yandexcloud/_sdk.py
@@ -104,7 +104,7 @@ def wait_operation_and_get_result(
         meta_type: Optional[Type["MetaType"]] = None,
         timeout: Optional[float] = None,
         logger: Optional["logging.Logger"] = None,
-    ) -> Union["OperationResult", "OperationError"]:
+    ) -> Union["OperationResult[ResponseType, MetaType]", "OperationError"]:
         return _operation_waiter.get_operation_result(self, operation, response_type, meta_type, timeout, logger)
 
     def create_operation_and_get_result(
diff --git a/yandexcloud/operations.py b/yandexcloud/operations.py
index d0f8ab49..050bb990 100644
--- a/yandexcloud/operations.py
+++ b/yandexcloud/operations.py
@@ -1,4 +1,4 @@
-from typing import TYPE_CHECKING, Optional, TypeVar
+from typing import TYPE_CHECKING, Generic, Optional, TypeVar
 
 if TYPE_CHECKING:
     import google.protobuf.message
@@ -11,7 +11,7 @@
 MetaType = TypeVar("MetaType", bound="google.protobuf.message.Message")  # pylint: disable=C0103
 
 
-class OperationResult:
+class OperationResult(Generic[ResponseType, MetaType]):
     def __init__(
         self,
         operation: "Operation",
@@ -24,7 +24,7 @@ def __init__(
 
 
 class OperationError(RuntimeError):
-    def __init__(self, message: str, operation_result: OperationResult):
+    def __init__(self, message: str, operation_result: OperationResult[ResponseType, MetaType]):
         super(OperationError, self).__init__(message)  # pylint: disable=super-with-arguments
         self.message = message
         self.operation_result = operation_result