diff --git a/docs/index.md b/docs/index.md
index 110e8a9..5ec4219 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -167,7 +167,7 @@ $ pytest
 To release a new version:
 
 - Update CHANGELOG.md
-- Bump the version number is `pyproject.toml`
+- Bump the version number in `pyproject.toml`
 - `poetry build`
 - `poetry publish`