Bump version: v2.3.1

README.md

@@ -88,7 +88,7 @@ jobs:
       - uses: actions/setup-python@v2
 
       - name: Install cibuildwheel
-        run: python -m pip install cibuildwheel==2.3.0
+        run: python -m pip install cibuildwheel==2.3.1
 
       - name: Build wheels
         run: python -m cibuildwheel --output-dir wheelhouse
@@ -193,6 +193,13 @@ Changelog
 
 <!-- this section was generated by bin/update_readme_changelog.py -- do not edit manually -->
 
+### v2.3.1
+
+_14 December 2021_
+
+- 🐛 Setting pip options like `PIP_USE_DEPRECATED` in `CIBW_ENVIRONMENT` no longer adversely affects cibuildwheel's ability to set up a Python environment (#956)
+- 📚 Docs fixes and improvements
+
 ### v2.3.0
 
 _26 November 2021_
@@ -239,12 +246,6 @@ _22 October 2021_
 
 <sup>Note: This version is not available on PyPI due to some missing resources in the release files. Please use a later version instead.</sup>
 
-### v2.1.3
-
-_6 October 2021_
-
-- 🛠 Updated CPython 3.10 to the 3.10.0 final release
-
 <!-- END bin/update_readme_changelog.py -->
 
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