diff --git a/phone_agent/config/prompts.py b/phone_agent/config/prompts.py
index 6dc745d8..064d4f9f 100644
--- a/phone_agent/config/prompts.py
+++ b/phone_agent/config/prompts.py
@@ -3,7 +3,7 @@
 from datetime import datetime
 
 today = datetime.today()
-formatted_date = today.strftime("%Y年%m月%d日")
+formatted_date = f"{today.year}年{today.month:02d}月{today.day:02d}日"
 
 SYSTEM_PROMPT = (
     "今天的日期是: "
diff --git a/phone_agent/config/prompts_zh.py b/phone_agent/config/prompts_zh.py
index dc854762..cea0596f 100644
--- a/phone_agent/config/prompts_zh.py
+++ b/phone_agent/config/prompts_zh.py
@@ -5,7 +5,7 @@
 today = datetime.today()
 weekday_names = ["星期一", "星期二", "星期三", "星期四", "星期五", "星期六", "星期日"]
 weekday = weekday_names[today.weekday()]
-formatted_date = today.strftime("%Y年%m月%d日") + " " + weekday
+formatted_date = f"{today.year}年{today.month:02d}月{today.day:02d}日 {weekday}"
 
 SYSTEM_PROMPT = (
     "今天的日期是: "