diff --git a/chat-client-python/chat_client.py b/chat-client-python/chat_client.py
index 9681119..f15fe26 100755
--- a/chat-client-python/chat_client.py
+++ b/chat-client-python/chat_client.py
@@ -1,14 +1,19 @@
 #!/usr/bin/env python3
 from typing import List
+from importlib import metadata
+from packaging import version
 
 from chat_openapi.exceptions import ApiException
 from chat_openapi.configuration import Configuration
 from chat_openapi.api_client import ApiClient
 from chat_openapi.api.chat_api import ChatApi
-from chat_openapi.model.chat_message import ChatMessage
-from chat_openapi.model.new_chat_message_request import NewChatMessageRequest
-from chat_openapi.model.background_color_enum import BackgroundColorEnum
+from chat_openapi.models.chat_message import ChatMessage
+from chat_openapi.models.new_chat_message_request import NewChatMessageRequest
+from chat_openapi.models.background_color_enum import BackgroundColorEnum
 
+if version.parse(metadata.version('pydantic')) < version.parse("2.0"):
+    print("pydantic 2+ required")
+    exit(1)
 
 configuration = Configuration(host="http://localhost:8080")
 configuration.debug = False
@@ -18,17 +23,22 @@
 
 try:
     # get all messages
+    print("all messages:")
     messages: List[ChatMessage] = chat.get_all_messages()
-    for msg in messages:
-        print("(%s)" % msg.author, msg.text)
+    for idx, msg in enumerate(messages):
+        print("#%d (author: %s)" % (idx, msg.author), msg.text)
 
     # create a new message
+    print()
+    print("new messages:")
     msg_req = NewChatMessageRequest(text="Hello!", text_color="black", background_color=BackgroundColorEnum("lightgray"))
     msg: ChatMessage = chat.create_message(msg_req, author="Joe")
-    print("(%s)" % msg.author, msg.text)
+    print("(author: %s)" % msg.author, msg.text)
 
-    # would cause exception
-    # chat.get_message("-1")
+    # handling exception
+    print()
+    print("expected exception for non-existent message id:")
+    msg = chat.get_message("-1")
 
 except ApiException as e:
     print("Exception: %s\n" % e)
diff --git a/chat-client-python/generate.sh b/chat-client-python/generate.sh
index 03f2618..96b23b5 100755
--- a/chat-client-python/generate.sh
+++ b/chat-client-python/generate.sh
@@ -1,13 +1,13 @@
 #!/bin/bash
 
-GENERATOR_VERSION=6.3.0
+GENERATOR_VERSION=7.4.0
 if [ ! -f  "openapi-generator-cli-$GENERATOR_VERSION.jar" ] ; then
   wget https://repo1.maven.org/maven2/org/openapitools/openapi-generator-cli/$GENERATOR_VERSION/openapi-generator-cli-$GENERATOR_VERSION.jar
 fi
 
 rm -rf chat_openapi
 # see https://openapi-generator.tech/docs/usage#generate
-# and https://openapi-generator.tech/docs/generators/python-prior
+# and https://openapi-generator.tech/docs/generators/python
 java \
  --add-opens java.base/java.util=ALL-UNNAMED \
  --add-opens java.base/java.lang=ALL-UNNAMED \
@@ -16,8 +16,7 @@ java \
  -DmodelDocs=true \
  -DmodelTests=false \
  -jar openapi-generator-cli-$GENERATOR_VERSION.jar generate \
- --generator-name python-prior \
+ --generator-name python \
  --input-spec ../openapi.yaml \
- --model-package model \
  --additional-properties=generateSourceCodeOnly=true,packageName=chat_openapi