diff --git a/docs/index.md b/docs/index.md
index 10620c4..b3a285f 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -3,7 +3,7 @@
 [![PyPI](https://img.shields.io/pypi/v/llm.svg)](https://pypi.org/project/llm/)
 [![Changelog](https://img.shields.io/github/v/release/simonw/llm?include_prereleases&label=changelog)](https://llm.datasette.io/en/stable/changelog.html)
 [![Tests](https://github.com/simonw/llm/workflows/Test/badge.svg)](https://github.com/simonw/llm/actions?query=workflow%3ATest)
-[![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/simonw/llm/blob/master/LICENSE)
+[![License](https://img.shields.io/badge/license-Apache%202.0-blue.svg)](https://github.com/simonw/llm/blob/main/LICENSE)
 
 A command-line utility for interacting with Large Language Models, such as OpenAI's GPT series.