diff --git a/crates/voicevox_core_python_api/python/voicevox_core/__init__.py b/crates/voicevox_core_python_api/python/voicevox_core/__init__.py
index 76720e046..2c33b8f59 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/__init__.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/__init__.py
@@ -9,3 +9,16 @@
     SupportedDevices,
 )
 from ._rust import METAS, SUPPORTED_DEVICES, VoicevoxCore  # noqa: F401
+
+
+__all__ = [
+    "METAS",
+    "SUPPORTED_DEVICES",
+    "AccelerationMode",
+    "AccentPhrase",
+    "AudioQuery",
+    "Meta",
+    "Mora",
+    "SupportedDevices",
+    "VoicevoxCore",
+]