diff --git a/CHANGES.rst b/CHANGES.rst
index f6108b6..d3c14e2 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -2,6 +2,15 @@
 Changelog
 =========
 
+2022.5 (27 April 2022)
+======================
+
+The ``sphinx-copybutton`` extension is installed to this package with some
+default configurations. For it to work properly, this package must be used as
+an extension in addition to usage as a theme (`#26 <https://github.com/nextstrain/sphinx-theme/pull/26>`_).
+
+Demo doc includes example usage.
+
 2022.4 (5 April 2022)
 =====================
 
diff --git a/lib/nextstrain/sphinx/theme/VERSION b/lib/nextstrain/sphinx/theme/VERSION
index eedc89f..6d2d10c 100644
--- a/lib/nextstrain/sphinx/theme/VERSION
+++ b/lib/nextstrain/sphinx/theme/VERSION
@@ -1,4 +1,4 @@
-2022.4
+2022.5
 
 The first line of this file declares the nextstrain-sphinx-theme package
 version.  It is read by setup.py and lib/nextstrain/sphinx/theme/__init__.py.