diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7584ee..ac9adfe 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,28 @@ Versions follow [Semantic Versioning](https://semver.org) (`<major>.<minor>.<pat
 
 ## Unreleased
 
+## [0.9.0] - 2026-08-13
+
+### Changed
+
+- Build/dev tooling migrated from `hatch` to `uv` + `Make`; all `make` recipes now wrap `uv run` and no manual environment activation is needed ([#109](https://github.com/DuguidLab/mesoscopy/pull/109)).
+- `register`'s `--crop-x`/`--crop-y` options replaced with `--output-width`/`--output-height`; registered output now consistently matches the ABA template shape (or a given output shape) instead of a crop region ([#110](https://github.com/DuguidLab/mesoscopy/pull/110)).
+- Landmark identification GUI reworked to make point identification more explicit and warn when landmarks are missing ([#110](https://github.com/DuguidLab/mesoscopy/pull/110)).
+
+### Fixed
+
+- Registration coordinates read inconsistently as xy vs. yx in places, causing warped/misaligned output ([#110](https://github.com/DuguidLab/mesoscopy/pull/110)).
+- Landmark GUI could silently drop a point if it was deleted, corrupting downstream registration.
+- ABA scaling issue affecting registered output size.
+- Automagic landmark file discovery and max-intensity-projection discovery for NWB files.
+- Landmark pair name matching, plus a new QA check for registration fit quality.
+- NWB update step storing an incorrect transform value after registration.
+- Docs generation.
+
+### Performance
+
+- Registration output array is now preallocated instead of built as a Python list and stacked.
+
 ## [0.8.0] - 2026-08-06
 
 ### Added
diff --git a/pyproject.toml b/pyproject.toml
index 3450403..b23e780 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "mesoscopy"
-version = "0.8.0"
+version = "0.9.0"
 description = "Analysis pipeline for rodent widefield calcium imaging data."
 readme = "README.md"
 requires-python = ">=3.12"
@@ -222,4 +222,4 @@ exclude_lines = [
   "no cov",
   "if __name__ == .__main__.:",
   "if TYPE_CHECKING:",
-]
\ No newline at end of file
+]
diff --git a/uv.lock b/uv.lock
index 2b0b2b5..aa09344 100644
--- a/uv.lock
+++ b/uv.lock
@@ -1230,7 +1230,7 @@ wheels = [
 
 [[package]]
 name = "mesoscopy"
-version = "0.8.0"
+version = "0.9.0"
 source = { editable = "." }
 dependencies = [
     { name = "av" },