diff --git a/doc/CHANGELOG.md b/doc/CHANGELOG.md
index 7fc553f..c820e37 100644
--- a/doc/CHANGELOG.md
+++ b/doc/CHANGELOG.md
@@ -4,14 +4,14 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## Unreleased
+## 4.0.0.post2 -- 2022-06-25
 ### Changed
 - [c6ba100](https://github.com/vocalpy/crowsetta/commit/c6ba100d7335a880f2e1dbf66f5673ef562f3cc5)
   Fix description and uri in pyproject.toml and crowsetta/__about__.py
 - [f70828f](https://github.com/vocalpy/crowsetta/commit/f70828fc09102215ae9d8076f66a79d515db3388)
   Make README images link to raw GitHub files so they render on PyPI
 
-## 4.0.0.post1
+## 4.0.0.post1 -- 2022-06-25
 ### Changed
 - clean up README and make other doc fixes
   [#201](https://github.com/NickleDave/crowsetta/pull/201).
diff --git a/pyproject.toml b/pyproject.toml
index 4ca816a..a21d62b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -21,7 +21,7 @@ dependencies = [
     "scipy >=1.4.1",
     "SoundFile >=0.10.3",
 ]
-version = "4.0.0.post1"
+version = "4.0.0.post2"
 readme = "README.md"
 license = {file = "LICENSE"}
 classifiers = [
diff --git a/src/crowsetta/__about__.py b/src/crowsetta/__about__.py
index 7e6ec60..e7d8589 100644
--- a/src/crowsetta/__about__.py
+++ b/src/crowsetta/__about__.py
@@ -23,7 +23,7 @@
 __summary__ = "A Python tool to work with any format for annotating animal vocalizations and bioacoustics data"
 __uri__ = "https://github.com/vocalpy/crowsetta"
 
-__version__ = "4.0.0.post1"
+__version__ = "4.0.0.post2"
 
 if base_dir is not None and os.path.exists(os.path.join(base_dir, ".commit")):
     with open(os.path.join(base_dir, ".commit")) as fp: