diff --git a/docs/changelog.md b/docs/changelog.md
index d6cbe48..3a833d3 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -1,5 +1,15 @@
 # Changelog
 
+(v0_23_a0)=
+## 0.23a0 (2025-02-26)
+
+Alpha release adding support for **schemas**, for getting supported models to output JSON that matches a specified JSON schema. [#776](https://github.com/simonw/llm/issues/776)
+
+- `llm prompt --schema '{JSON schema goes here}` option for specifying a schema that should be used for the output from the model, see {ref}`schemas in the CLI docs <usage-schemas>`.
+- `model.prompt(..., schema={...})` parameter for specifying a schema from Python. This accepts either a dictionary JSON schema definition of a Pydantic `BaseModel` subclass, see {ref}`schemas in the Python API docs <python-api-schemas>`.
+- The default OpenAI plugin now supports schemas across all models.
+- Documentation on how to {ref}`add schema support to a model plugin <advanced-model-plugins-schemas>`.
+
 (v0_22)=
 ## 0.22 (2025-02-16)
 
diff --git a/setup.py b/setup.py
index 23d80cf..34f7ae2 100644
--- a/setup.py
+++ b/setup.py
@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 import os
 
-VERSION = "0.22"
+VERSION = "0.23a0"
 
 
 def get_long_description():