# Important reference notes for Amazon SAM
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This section contains important notes and announcements for Amazon Serverless Application Model (Amazon SAM).

**Topics**
+ [Important notes for 2023](#important-notes-2023)

## Important notes for 2023
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### October 2023
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#### Amazon SAM CLI discontinuing support for Python 3.7
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*Published on 2023-10-20*

Python 3.7 received end-of-life status in June of 2023. The Amazon SAM CLI will discontinue support for Python 3.7 on October 24, 2023. For more information, see the [announcement](https://github.com/aws/aws-sam-cli/issues/5889) at the *aws-sam-cli GitHub repository*.

This change impacts the following users:
+ If you use Python 3.7 and install the Amazon SAM CLI through `pip`.
+ If you use the `aws-sam-cli` as a library and build your application with Python 3.7.

If you install and manage the Amazon SAM CLI through another method, you are not affected.

For impacted users, we recommend that you upgrade your development environment to Python 3.8 or newer.

This change does not affect support for the Python 3.7 Amazon Lambda runtime environment. For more information, see [Runtime deprecation policy](https://docs.amazonaws.cn/lambda/latest/dg/lambda-runtimes.html#runtime-support-policy) in the *Amazon Lambda Developer Guide*.