diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 14fae22..25a2a6f 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -14,7 +14,7 @@ jobs:
     strategy:
       matrix:
         include:
-          - python-version: "3.8"
+          - python-version: "3.9"
             os: ubuntu-latest
           - python-version: "3.8"
             os: macos-latest
diff --git a/README-ZH.md b/README-ZH.md
index aa8c674..ce838c5 100644
--- a/README-ZH.md
+++ b/README-ZH.md
@@ -52,6 +52,10 @@ askchat --all-valid-models
 askchat hello
 # 继续上一次对话：-c
 askchat -c 请给我讲个笑话
+# 重新生成最后一次对话：-r
+askchat -r
+# 修改并重新生成最后一次对话：-r
+askchat -r give me some jokes please
 # 保存对话：-s/--save
 askchat -s joke
 # 加载对话：-l/--load
diff --git a/README.md b/README.md
index f891777..53e9f98 100644
--- a/README.md
+++ b/README.md
@@ -53,6 +53,10 @@ You can manage your chats with `askchat`:
 askchat hello
 # continue the last chat: -c
 askchat -c tell me a joke please
+# regenerate the last conversation: -r
+askchat -r
+# regenerate the last conversation with new message: -r
+askchat -r give me some jokes please
 # save the chat: -s/--save
 askchat -s joke
 # load the chat: -l/--load
diff --git a/askchat/__init__.py b/askchat/__init__.py
index 6424149..411c040 100644
--- a/askchat/__init__.py
+++ b/askchat/__init__.py
@@ -2,6 +2,6 @@
 
 __author__ = """Rex Wang"""
 __email__ = '1073853456@qq.com'
-__version__ = '0.3.1'
+__version__ = '0.3.2'
 
 from .askchat import ask
\ No newline at end of file
diff --git a/askchat/askchat.py b/askchat/askchat.py
index 2369d54..7c13bdf 100644
--- a/askchat/askchat.py
+++ b/askchat/askchat.py
@@ -157,28 +157,30 @@ def main():
         names = args.print
         assert len(names) <= 1, "Only one file can be specified"
         new_file = os.path.join(CONFIG_PATH, names[0]) + ".json" if len(names) else LAST_CHAT_FILE
-        with open(new_file, "r") as f:
-            chatlog = json.load(f)
-        Chat(chatlog).print_log()
+        chat = Chat.load(new_file)
+        chat.print_log()
         call_history = True
     if call_history: return
     # Initial message
     msg = args.message
     if isinstance(msg, list):
-        msg = ' '.join(msg)
-    assert len(msg.strip()), 'Please specify message'
+        msg = ' '.join(msg).strip()
+    chat = Chat(msg)
     if os.path.exists(LAST_CHAT_FILE):
-        with open(LAST_CHAT_FILE, "r") as f:
-            chatlog = json.load(f)
         if args.c:
-            msg = chatlog + [{"role":"user", "content":msg}]
+            chat = Chat.load(LAST_CHAT_FILE)
+            chat.user(msg)
         elif args.r:
-            if len(chatlog) > 0:chatlog.pop()
-            if len(chatlog) > 0:chatlog.pop()
-            msg = chatlog + [{"role":"user", "content":msg}]
-    
+            # pop out the last two messages
+            chat = Chat.load(LAST_CHAT_FILE)
+            assert len(chat) > 1, "Please specify message!"
+            chat.pop()
+            if len(msg) != 0: # not empty message
+                chat.pop()
+                chat.user(msg)
+            # if msg is empty, regenerate the last message
+    assert len(chat) > 0 and len(chat.last_message) > 0, "Please specify message!"
     # call the function
-    chat = Chat(msg)
-    msg = asyncio.run(show_resp(chat))
-    chat.assistant(msg)
+    newmsg = asyncio.run(show_resp(chat))
+    chat.assistant(newmsg)
     chat.save(LAST_CHAT_FILE, mode='w')
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 05c7a06..6729fb2 100644
--- a/setup.py
+++ b/setup.py
@@ -4,12 +4,12 @@
 
 from setuptools import setup, find_packages
 
-VERSION = '0.3.1'
+VERSION = '0.3.2'
 
 with open('README.md') as readme_file:
     readme = readme_file.read()
 
-requirements = ['chattool>=2.5.0', "python-dotenv>=0.17.0"]
+requirements = ['chattool>=2.6.0', "python-dotenv>=0.17.0"]
 
 test_requirements = ['pytest>=3']