diff --git a/pyproject.toml b/pyproject.toml
index b2bad25b9..1d8332c22 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,7 +69,7 @@ dependencies = [
     "numpy>=1.26.0,<3; sys_platform != 'emscripten'",
     "numpy; sys_platform == 'emscripten'",
     # parquet fallback / pyodide bridge. pyodide 는 빌트인.
-    "pyarrow>=17,<25; sys_platform != 'emscripten'",
+    "pyarrow>=17,<26; sys_platform != 'emscripten'",
     "pyarrow; sys_platform == 'emscripten'",
     "zstandard>=0.23,<1; sys_platform != 'emscripten'",
     # network