diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 7d3d91604..9c7d2fb4b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    "hugr-py": "0.8.1"
+    "hugr-py": "0.9.0"
 }
diff --git a/hugr-py/CHANGELOG.md b/hugr-py/CHANGELOG.md
index bd6f39fa8..163e6f596 100644
--- a/hugr-py/CHANGELOG.md
+++ b/hugr-py/CHANGELOG.md
@@ -1,5 +1,24 @@
 # Changelog
 
+## [0.9.0](https://github.com/CQCL/hugr/compare/hugr-py-v0.8.1...hugr-py-v0.9.0) (2024-10-14)
+
+
+### ⚠ BREAKING CHANGES
+
+* `Package` moved to new `hugr.package` module
+* The `length` op in the std `collections` extensions now also returns the list.
+
+### Features
+
+* `instantiate` method for `OpDef` ([#1576](https://github.com/CQCL/hugr/issues/1576)) ([36548ab](https://github.com/CQCL/hugr/commit/36548ab4e377ca9074a80355fabd51693d89c649)), closes [#1512](https://github.com/CQCL/hugr/issues/1512)
+* define wrappers around package that point to internals ([#1573](https://github.com/CQCL/hugr/issues/1573)) ([f74dbf3](https://github.com/CQCL/hugr/commit/f74dbf333fb69b2965cc38c513ad8dfbdfcb0e3c))
+* to/from json for extension/package ([#1575](https://github.com/CQCL/hugr/issues/1575)) ([f8bf61a](https://github.com/CQCL/hugr/commit/f8bf61aa54dd2424c42ecba7d1ae41b1d35f7f9d)), closes [#1523](https://github.com/CQCL/hugr/issues/1523)
+
+
+### Bug Fixes
+
+* Make list length op give back the list ([#1547](https://github.com/CQCL/hugr/issues/1547)) ([cf31698](https://github.com/CQCL/hugr/commit/cf31698113ea02e2d13596638b1fe0f4f118a601))
+
 ## [0.8.1](https://github.com/CQCL/hugr/compare/hugr-py-v0.8.0...hugr-py-v0.8.1) (2024-09-04)
 
 
diff --git a/hugr-py/pyproject.toml b/hugr-py/pyproject.toml
index 2766b4bbd..b7ed4714f 100644
--- a/hugr-py/pyproject.toml
+++ b/hugr-py/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "hugr"
-version = "0.8.1"
+version = "0.9.0"
 requires-python = ">=3.10,<3.14"
 description = "Quantinuum's common representation for quantum programs"
 license = { file = "LICENCE" }
diff --git a/hugr-py/src/hugr/__init__.py b/hugr-py/src/hugr/__init__.py
index e8a4a75fa..1088736a9 100644
--- a/hugr-py/src/hugr/__init__.py
+++ b/hugr-py/src/hugr/__init__.py
@@ -16,4 +16,4 @@
 
 # This is updated by our release-please workflow, triggered by this
 # annotation: x-release-please-version
-__version__ = "0.8.1"
+__version__ = "0.9.0"
diff --git a/uv.lock b/uv.lock
index e0d9030b4..9dc359a56 100644
--- a/uv.lock
+++ b/uv.lock
@@ -262,7 +262,7 @@ wheels = [
 
 [[package]]
 name = "hugr"
-version = "0.8.1"
+version = "0.9.0"
 source = { editable = "hugr-py" }
 dependencies = [
     { name = "graphviz" },