#### Environment details - OS type and version: macOS sonoma 14.6 - Python version: 3.11.9 - pip version: I use rye instead of pip. and rye version is 0.35 - `pandas-gbq` version: 0.26.1 - `pandas` version: 2.2.2 #### Code example ```python import pandas_gbq df = pandas_gbq.read_gbq('SELECT timestamp FROM `bigquery-public-data.pypi.file_downloads` LIMIT 1') print(df.dtypes) df = pandas_gbq.read_gbq('SELECT timestamp FROM `bigquery-public-data.pypi.file_downloads` LIMIT 0') print(df.dtypes) ``` got the following. I expected either `us` or `ns` ``` timestamp datetime64[us, UTC] dtype: object timestamp datetime64[ns, UTC] dtype: object ``` When I downgrade pandas version to 1.5.3, the above both code returns `datetime64[ns, UTC]`. Thanks!