diff --git a/arkprts/assets/bundle.py b/arkprts/assets/bundle.py
index 4832ac1..1cf3e1e 100644
--- a/arkprts/assets/bundle.py
+++ b/arkprts/assets/bundle.py
@@ -11,7 +11,6 @@
 import io
 import json
 import logging
-import os
 import pathlib
 import re
 import shlex
@@ -33,7 +32,7 @@
 UnityPyAsset = typing.Any
 UnityPyObject = typing.Any
 
-UPDATED_FBS = {"cn": False, "yostar": False}
+UPDATED_FBS = {"cn": False, "yostar": False, "tw": False}
 
 
 def asset_path_to_server_filename(path: str) -> str:
@@ -124,16 +123,14 @@ def run_flatbuffers(
     return pathlib.Path(output_directory) / (pathlib.Path(fbs_path).stem + ".json")
 
 
-def resolve_fbs_schema_directory(server: typing.Literal["cn", "yostar"]) -> pathlib.Path:
+def resolve_fbs_schema_directory(server: typing.Literal["cn", "yostar", "tw"]) -> pathlib.Path:
     """Resolve the flatbuffers schema directory."""
-    path = os.environ.get(f"FLATBUFFERS_SCHEMA_DIR_{server.upper()}")
-    if path:
-        return pathlib.Path(path)
+    if server == "tw":
+        return netn.APPDATA_DIR / "ArknightsFlatbuffers" / "tw"
 
     core_path = netn.APPDATA_DIR / "ArknightsFBS"
     core_path.mkdir(parents=True, exist_ok=True)
     path = core_path / server / "OpenArknightsFBS" / "FBS"
-    os.environ[f"FLATBUFFERS_SCHEMA_DIR_{server.upper()}"] = str(path)
     return path
 
 
@@ -147,6 +144,12 @@ async def update_fbs_schema(*, force: bool = False) -> None:
         directory = resolve_fbs_schema_directory(server).parent  # pyright: ignore[reportArgumentType]
         await git.download_repository("MooncellWiki/OpenArknightsFBS", directory, branch=branch, force=force)
 
+    if not UPDATED_FBS["tw"] or force:
+        UPDATED_FBS["tw"] = True
+        await git.download_repository(
+            "ArknightsAssets/ArknightsFlatbuffers", netn.APPDATA_DIR / "ArknightsFlatbuffers", force=force,
+        )
+
 
 def recursively_collapse_keys(obj: typing.Any) -> typing.Any:
     """Recursively collapse arknights flatc dictionaries."""
@@ -181,9 +184,9 @@ def decrypt_fbs_file(
 
     fbs_path = tempdir / (table_name + ".bytes")
     fbs_path.write_bytes(data)
-    fbs_schema_path = resolve_fbs_schema_directory(server="cn" if server in ("cn", "bili") else "yostar") / (
-        table_name + ".fbs"
-    )
+    fbs_schema_path = resolve_fbs_schema_directory(
+        server="cn" if server in ("cn", "bili") else "tw" if server == "tw" else "yostar",
+    ) / (table_name + ".fbs")
     output_directory = tempdir / "output"
 
     output_path = run_flatbuffers(fbs_path, fbs_schema_path, output_directory)
diff --git a/setup.py b/setup.py
index fd165ee..5b8b4db 100644
--- a/setup.py
+++ b/setup.py
@@ -13,10 +13,10 @@
     package_data={"arkprts": ["py.typed"]},
     install_requires=["aiohttp", "pydantic==2.*"],
     extras_require={
-        "all": ["rsa", "pycryptodome", "UnityPy", "bson"],
+        "all": ["rsa", "pycryptodome", "UnityPy==1.10.18", "bson"],
         "rsa": ["rsa"],
         "aes": ["pycryptodome"],
-        "assets": ["UnityPy", "pycryptodome", "bson"],
+        "assets": ["UnityPy==1.10.18", "pycryptodome", "bson"],
     },
     long_description=pathlib.Path("README.md").read_text(encoding="utf-8"),
     long_description_content_type="text/markdown",