`pydantic-ai` `v1.5.0` incompatibility with `google-genai` `v1.31.0`

[jerry-reevo]

Initial Checks

• I confirm that I'm using the latest version of Pydantic AI
• I confirm that I searched for my issue in https://github.com/pydantic/pydantic-ai/issues before opening this issue

Description

With pydantic-ai v1.5.0 and google-genai v1.31.0 I am getting the following error:

AttributeError: type object 'FinishReason' has no attribute 'IMAGE_PROHIBITED_CONTENT'. Did you mean: 'PROHIBITED_CONTENT'?

It looks like IMAGE_PROHIBITED_CONTENT was added in a newer version and pydantic-ai might need to declare a minimum version of google-genai

Example Code

Python, Pydantic AI & LLM client version

Python 3.13.9

[jerry-reevo]

I've been able to verify the first version the IMAGE_PROHIBITED_CONTENT is available in google-genai is v1.40.0

[jerry-reevo]

The current code has the constraint "google-genai>=1.46.0" for the google optional dependency, which I do not use, but I use google-genai for other purposes. The issue was I had deprecated code that imported the pydantic-ai.google package triggering the error. I should pull the google optional dependency.