After that, in 1906 when the Legation in France was promoted to the Embassy, he was appointed as the first Ambassador to France, and in the next year, 1907, he concluded the Contract between France and Japan.
その後、フランス公使館が大使館に昇格した1906年（明治39年）に初代駐フランス大使に任ぜられ、翌1907年日仏協約を締結する。