diff --git a/crates/voicevox_core_python_api/pyproject.toml b/crates/voicevox_core_python_api/pyproject.toml
index 5ad0bd6d8..428e7695f 100644
--- a/crates/voicevox_core_python_api/pyproject.toml
+++ b/crates/voicevox_core_python_api/pyproject.toml
@@ -22,6 +22,9 @@ build-backend = "maturin"
 [tool.isort]
 profile = "black"
 
+[tool.pyright]
+executionEnvironments = [{ root = "python/test" }, { root = "python" }]
+
 [tool.maturin]
 module-name = "voicevox_core._rust"
 bindings = "pyo3"
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py b/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
index fec0c831b..75b160814 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/asyncio.py
@@ -1,3 +1,4 @@
+# pyright: reportMissingModuleSource=false
 from ._rust.asyncio import OpenJtalk, Synthesizer, UserDict, VoiceModel
 
 __all__ = ["OpenJtalk", "Synthesizer", "UserDict", "VoiceModel"]
diff --git a/crates/voicevox_core_python_api/python/voicevox_core/blocking.py b/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
index e378037c3..80f61fdcb 100644
--- a/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
+++ b/crates/voicevox_core_python_api/python/voicevox_core/blocking.py
@@ -1,3 +1,4 @@
+# pyright: reportMissingModuleSource=false
 from ._rust.blocking import OpenJtalk, Synthesizer, UserDict, VoiceModel
 
 __all__ = ["OpenJtalk", "Synthesizer", "UserDict", "VoiceModel"]