diff --git a/Cargo.lock b/Cargo.lock
index 69b5d78ad..14a81dd30 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4438,7 +4438,7 @@ checksum = "49874b5167b65d7193b8aba1567f5c7d93d001cafc34600cee003eda787e483f"
 [[package]]
 name = "voicevox-ort"
 version = "2.0.0-rc.4"
-source = "git+https://github.com/VOICEVOX/ort.git?rev=09a9fe1619c1561efafc02f68f0bda4aad879771#09a9fe1619c1561efafc02f68f0bda4aad879771"
+source = "git+https://github.com/qryxip/ort.git?rev=a44e2ae1b08a444b90f0aa66d1073edbe68ab2b0#a44e2ae1b08a444b90f0aa66d1073edbe68ab2b0"
 dependencies = [
  "anyhow",
  "half",
@@ -4455,7 +4455,7 @@ dependencies = [
 [[package]]
 name = "voicevox-ort-sys"
 version = "2.0.0-rc.4"
-source = "git+https://github.com/VOICEVOX/ort.git?rev=09a9fe1619c1561efafc02f68f0bda4aad879771#09a9fe1619c1561efafc02f68f0bda4aad879771"
+source = "git+https://github.com/qryxip/ort.git?rev=a44e2ae1b08a444b90f0aa66d1073edbe68ab2b0#a44e2ae1b08a444b90f0aa66d1073edbe68ab2b0"
 dependencies = [
  "flate2",
  "pkg-config",
diff --git a/Cargo.toml b/Cargo.toml
index d4b62869b..6324c25ff 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -98,8 +98,8 @@ windows = "0.43.0"
 zip = "0.6.3"
 
 [workspace.dependencies.voicevox-ort]
-git = "https://github.com/VOICEVOX/ort.git"
-rev = "09a9fe1619c1561efafc02f68f0bda4aad879771"
+git = "https://github.com/qryxip/ort.git"
+rev = "a44e2ae1b08a444b90f0aa66d1073edbe68ab2b0"
 
 [workspace.dependencies.open_jtalk]
 git = "https://github.com/VOICEVOX/open_jtalk-rs.git"
diff --git a/crates/voicevox_core_python_api/python/test/test_asyncio_user_dict_load.py b/crates/voicevox_core_python_api/python/test/test_asyncio_user_dict_load.py
index 135822ca7..e433a7442 100644
--- a/crates/voicevox_core_python_api/python/test/test_asyncio_user_dict_load.py
+++ b/crates/voicevox_core_python_api/python/test/test_asyncio_user_dict_load.py
@@ -6,7 +6,6 @@
 
 # AudioQueryのkanaを比較して変化するかどうかで判断する。
 
-import multiprocessing
 from uuid import UUID
 
 import conftest  # noqa: F401
@@ -21,13 +20,7 @@ async def test_user_dict_load() -> None:
     )
     open_jtalk = await voicevox_core.asyncio.OpenJtalk.new(conftest.open_jtalk_dic_dir)
     model = await voicevox_core.asyncio.VoiceModelFile.open(conftest.model_dir)
-    synthesizer = voicevox_core.asyncio.Synthesizer(
-        onnxruntime,
-        open_jtalk,
-        cpu_num_threads=max(
-            multiprocessing.cpu_count(), 2
-        ),  # https://github.com/VOICEVOX/voicevox_core/issues/888
-    )
+    synthesizer = voicevox_core.asyncio.Synthesizer(onnxruntime, open_jtalk)
 
     await synthesizer.load_voice_model(model)
 
diff --git a/example/python/run-asyncio.py b/example/python/run-asyncio.py
index 3cb8a7e48..2f71ee848 100644
--- a/example/python/run-asyncio.py
+++ b/example/python/run-asyncio.py
@@ -92,12 +92,7 @@ async def main() -> None:
 
     logger.info("%s", f"Initializing ({args.mode=}, {args.dict_dir=})")
     synthesizer = Synthesizer(
-        onnxruntime,
-        await OpenJtalk.new(args.dict_dir),
-        acceleration_mode=args.mode,
-        cpu_num_threads=max(
-            multiprocessing.cpu_count(), 2
-        ),  # https://github.com/VOICEVOX/voicevox_core/issues/888
+        onnxruntime, await OpenJtalk.new(args.dict_dir), acceleration_mode=args.mode
     )
 
     logger.debug("%s", f"{synthesizer.metas=}")
diff --git a/example/python/run.py b/example/python/run.py
index 5970f5dff..1e5ddbf8c 100644
--- a/example/python/run.py
+++ b/example/python/run.py
@@ -96,12 +96,7 @@ def main() -> None:
 
     logger.info("%s", f"Initializing ({args.mode=}, {args.dict_dir=})")
     synthesizer = Synthesizer(
-        onnxruntime,
-        OpenJtalk(args.dict_dir),
-        acceleration_mode=args.mode,
-        cpu_num_threads=max(
-            multiprocessing.cpu_count(), 2
-        ),  # https://github.com/VOICEVOX/voicevox_core/issues/888
+        onnxruntime, OpenJtalk(args.dict_dir), acceleration_mode=args.mode
     )
 
     logger.debug("%s", f"{synthesizer.metas=}")