diff --git a/mostlyai/sdk/client/_base_utils.py b/mostlyai/sdk/client/_base_utils.py
index c3826ac0..99e6d243 100644
--- a/mostlyai/sdk/client/_base_utils.py
+++ b/mostlyai/sdk/client/_base_utils.py
@@ -72,7 +72,7 @@ def convert_to_df(data: str, format: Literal["parquet", "jsonl"] = "parquet") ->
     return df
 
 
-def read_table_from_path(path: str | Path) -> (str, pd.DataFrame):
+def read_table_from_path(path: str | Path) -> tuple[str, pd.DataFrame]:
     # read data from file
     fn = str(path)
     if fn.lower().endswith((".pqt", ".parquet")):
diff --git a/mostlyai/sdk/client/generators.py b/mostlyai/sdk/client/generators.py
index f9ef1739..8ae2ffc7 100644
--- a/mostlyai/sdk/client/generators.py
+++ b/mostlyai/sdk/client/generators.py
@@ -267,7 +267,7 @@ def import_from_file(
     def _export_to_file(
         self,
         generator_id: str,
-    ) -> (bytes, str | None):
+    ) -> tuple[bytes, str | None]:
         response = self.request(
             verb=GET,
             path=[generator_id, "export-to-file"],
@@ -318,7 +318,7 @@ def _report(
         source_table_id: str,
         model_type: ModelType = ModelType.tabular,
         short_lived_file_token: str | None = None,
-    ) -> (str, str | None):
+    ) -> tuple[str, str | None]:
         response = self.request(
             verb=GET,
             path=[generator_id, "tables", source_table_id, "report"],
@@ -348,7 +348,7 @@ def _training_wait(self, generator_id: str, progress_bar: bool, interval: float)
         generator = self.get(generator_id)
         return generator
 
-    def _training_logs(self, generator_id: str, short_lived_file_token: str | None = None) -> (bytes, str):
+    def _training_logs(self, generator_id: str, short_lived_file_token: str | None = None) -> tuple[bytes, str]:
         response = self.request(
             verb=GET,
             path=[generator_id, "training", "logs"],
diff --git a/mostlyai/sdk/client/synthetic_datasets.py b/mostlyai/sdk/client/synthetic_datasets.py
index 5a44dfb3..ed5bcf7c 100644
--- a/mostlyai/sdk/client/synthetic_datasets.py
+++ b/mostlyai/sdk/client/synthetic_datasets.py
@@ -213,7 +213,7 @@ def _download(
         synthetic_dataset_id: str,
         ds_format: SyntheticDatasetFormat = SyntheticDatasetFormat.parquet,
         short_lived_file_token: str | None = None,
-    ) -> (bytes, str | None):
+    ) -> tuple[bytes, str | None]:
         response = self.request(
             verb=GET,
             path=[synthetic_dataset_id, "download"],
@@ -261,7 +261,7 @@ def _report(
         model_type: ModelType = ModelType.tabular,
         report_type: SyntheticDatasetReportType = SyntheticDatasetReportType.model,
         short_lived_file_token: str | None = None,
-    ) -> (str, str | None):
+    ) -> tuple[str, str | None]:
         response = self.request(
             verb=GET,
             path=[synthetic_dataset_id, "tables", synthetic_table_id, "report"],
@@ -300,7 +300,9 @@ def _generation_wait(self, synthetic_dataset_id: str, progress_bar: bool, interv
         synthetic_dataset = self.get(synthetic_dataset_id)
         return synthetic_dataset
 
-    def _generation_logs(self, synthetic_dataset_id: str, short_lived_file_token: str | None = None) -> (bytes, str):
+    def _generation_logs(
+        self, synthetic_dataset_id: str, short_lived_file_token: str | None = None
+    ) -> tuple[bytes, str]:
         response = self.request(
             verb=GET,
             path=[synthetic_dataset_id, "generation", "logs"],