diff --git a/jina/orchestrate/deployments/__init__.py b/jina/orchestrate/deployments/__init__.py
index 1676868db2cae..e4b6c3a5bc122 100644
--- a/jina/orchestrate/deployments/__init__.py
+++ b/jina/orchestrate/deployments/__init__.py
@@ -262,7 +262,7 @@ def __init__(
         docker_kwargs: Optional[dict] = None,
         entrypoint: Optional[str] = None,
         env: Optional[dict] = None,
-        exit_on_exceptions: Optional[List[str]] = [],
+        exit_on_exceptions: Optional[List] = [],
         external: Optional[bool] = False,
         floating: Optional[bool] = False,
         force_update: Optional[bool] = False,
@@ -270,7 +270,7 @@ def __init__(
         grpc_channel_options: Optional[dict] = None,
         grpc_metadata: Optional[dict] = None,
         grpc_server_options: Optional[dict] = None,
-        host: Optional[List[str]] = ['0.0.0.0'],
+        host: Optional[List] = ['0.0.0.0'],
         install_requirements: Optional[bool] = False,
         log_config: Optional[str] = None,
         metrics: Optional[bool] = False,
@@ -288,7 +288,7 @@ def __init__(
         protocol: Optional[Union[str, List[str]]] = ['GRPC'],
         provider: Optional[str] = ['NONE'],
         provider_endpoint: Optional[str] = None,
-        py_modules: Optional[List[str]] = None,
+        py_modules: Optional[List] = None,
         quiet: Optional[bool] = False,
         quiet_error: Optional[bool] = False,
         raft_configuration: Optional[dict] = None,
@@ -318,7 +318,7 @@ def __init__(
         uses_requests: Optional[dict] = None,
         uses_with: Optional[dict] = None,
         uvicorn_kwargs: Optional[dict] = None,
-        volumes: Optional[List[str]] = None,
+        volumes: Optional[List] = None,
         when: Optional[dict] = None,
         workspace: Optional[str] = None,
         **kwargs,
diff --git a/jina/orchestrate/flow/base.py b/jina/orchestrate/flow/base.py
index 6e83ff30f014b..8e66b1a37fd5a 100644
--- a/jina/orchestrate/flow/base.py
+++ b/jina/orchestrate/flow/base.py
@@ -202,7 +202,7 @@ def __init__(
         provider: Optional[str] = ['NONE'],
         provider_endpoint: Optional[str] = None,
         proxy: Optional[bool] = False,
-        py_modules: Optional[List[str]] = None,
+        py_modules: Optional[List] = None,
         quiet: Optional[bool] = False,
         quiet_error: Optional[bool] = False,
         reload: Optional[bool] = False,
@@ -848,7 +848,7 @@ def add(
         docker_kwargs: Optional[dict] = None,
         entrypoint: Optional[str] = None,
         env: Optional[dict] = None,
-        exit_on_exceptions: Optional[List[str]] = [],
+        exit_on_exceptions: Optional[List] = [],
         external: Optional[bool] = False,
         floating: Optional[bool] = False,
         force_update: Optional[bool] = False,
@@ -856,7 +856,7 @@ def add(
         grpc_channel_options: Optional[dict] = None,
         grpc_metadata: Optional[dict] = None,
         grpc_server_options: Optional[dict] = None,
-        host: Optional[List[str]] = ['0.0.0.0'],
+        host: Optional[List] = ['0.0.0.0'],
         install_requirements: Optional[bool] = False,
         log_config: Optional[str] = None,
         metrics: Optional[bool] = False,
@@ -874,7 +874,7 @@ def add(
         protocol: Optional[Union[str, List[str]]] = ['GRPC'],
         provider: Optional[str] = ['NONE'],
         provider_endpoint: Optional[str] = None,
-        py_modules: Optional[List[str]] = None,
+        py_modules: Optional[List] = None,
         quiet: Optional[bool] = False,
         quiet_error: Optional[bool] = False,
         raft_configuration: Optional[dict] = None,
@@ -904,7 +904,7 @@ def add(
         uses_requests: Optional[dict] = None,
         uses_with: Optional[dict] = None,
         uvicorn_kwargs: Optional[dict] = None,
-        volumes: Optional[List[str]] = None,
+        volumes: Optional[List] = None,
         when: Optional[dict] = None,
         workspace: Optional[str] = None,
         **kwargs,
@@ -1336,7 +1336,7 @@ def config_gateway(
         provider: Optional[str] = ['NONE'],
         provider_endpoint: Optional[str] = None,
         proxy: Optional[bool] = False,
-        py_modules: Optional[List[str]] = None,
+        py_modules: Optional[List] = None,
         quiet: Optional[bool] = False,
         quiet_error: Optional[bool] = False,
         reload: Optional[bool] = False,
diff --git a/jina/serve/executors/__init__.py b/jina/serve/executors/__init__.py
index 59bb9f8760344..4cc7754c83b08 100644
--- a/jina/serve/executors/__init__.py
+++ b/jina/serve/executors/__init__.py
@@ -1002,7 +1002,7 @@ def serve(
         docker_kwargs: Optional[dict] = None,
         entrypoint: Optional[str] = None,
         env: Optional[dict] = None,
-        exit_on_exceptions: Optional[List[str]] = [],
+        exit_on_exceptions: Optional[List] = [],
         external: Optional[bool] = False,
         floating: Optional[bool] = False,
         force_update: Optional[bool] = False,
@@ -1010,7 +1010,7 @@ def serve(
         grpc_channel_options: Optional[dict] = None,
         grpc_metadata: Optional[dict] = None,
         grpc_server_options: Optional[dict] = None,
-        host: Optional[List[str]] = ['0.0.0.0'],
+        host: Optional[List] = ['0.0.0.0'],
         install_requirements: Optional[bool] = False,
         log_config: Optional[str] = None,
         metrics: Optional[bool] = False,
@@ -1028,7 +1028,7 @@ def serve(
         protocol: Optional[Union[str, List[str]]] = ['GRPC'],
         provider: Optional[str] = ['NONE'],
         provider_endpoint: Optional[str] = None,
-        py_modules: Optional[List[str]] = None,
+        py_modules: Optional[List] = None,
         quiet: Optional[bool] = False,
         quiet_error: Optional[bool] = False,
         raft_configuration: Optional[dict] = None,
@@ -1058,7 +1058,7 @@ def serve(
         uses_requests: Optional[dict] = None,
         uses_with: Optional[dict] = None,
         uvicorn_kwargs: Optional[dict] = None,
-        volumes: Optional[List[str]] = None,
+        volumes: Optional[List] = None,
         when: Optional[dict] = None,
         workspace: Optional[str] = None,
         **kwargs,