diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2e6e846f5..635909c5a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,12 @@
 
 <!--next-version-placeholder-->
 
+## v3.21.0 (2024-09-30)
+
+### Other
+
+* Cleanup tests/data ([#274](https://github.com/icecube/skymap_scanner/issues/274)) ([`7624d91`](https://github.com/icecube/skymap_scanner/commit/7624d9141ba36acfd0e40b424f26658482d96fe4))
+
 ## v3.20.4 (2024-09-22)
 
 ### Other
diff --git a/skymap_scanner/__init__.py b/skymap_scanner/__init__.py
index 0d298daec..f8e7f7ad7 100644
--- a/skymap_scanner/__init__.py
+++ b/skymap_scanner/__init__.py
@@ -7,7 +7,7 @@
 # is zero for an official release, positive for a development branch,
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
-__version__ = "3.20.4"
+__version__ = "3.21.0"
 version_info = (
     int(__version__.split(".")[0]),
     int(__version__.split(".")[1]),