diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8fece04ef2..a2d78da80e 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    "hugr-py": "0.5.0"
+    "hugr-py": "0.6.0"
 }
diff --git a/hugr-py/CHANGELOG.md b/hugr-py/CHANGELOG.md
index 8c0fe85653..4ca135033c 100644
--- a/hugr-py/CHANGELOG.md
+++ b/hugr-py/CHANGELOG.md
@@ -1,5 +1,22 @@
 # Changelog
 
+## [0.6.0](https://github.com/CQCL/hugr/compare/hugr-py-v0.5.0...hugr-py-v0.6.0) (2024-08-02)
+
+
+### ⚠ BREAKING CHANGES
+
+* `TypeDefBound` uses struct-variants for serialization. `SignatureFunc` now has variants for missing binary functions, and serializes in to a new format that indicates expected binaries.
+
+### Features
+
+* `Package` pydantic model for modules + extensions ([#1387](https://github.com/CQCL/hugr/issues/1387)) ([68cfac5](https://github.com/CQCL/hugr/commit/68cfac5f63b35e8d709c5738a8893048240d5706)), closes [#1358](https://github.com/CQCL/hugr/issues/1358)
+* Serialised extensions ([#1371](https://github.com/CQCL/hugr/issues/1371)) ([31be204](https://github.com/CQCL/hugr/commit/31be2047ffb5515e3ac4d7a4214a3164399f9b3c))
+
+
+### Documentation
+
+* **hugr-py:** remove multiversion + add justfile command ([#1381](https://github.com/CQCL/hugr/issues/1381)) ([dd1dc48](https://github.com/CQCL/hugr/commit/dd1dc484447cc2180058f4474594ddb51fa45cd6))
+
 ## [0.5.0](https://github.com/CQCL/hugr/compare/hugr-py-v0.4.0...hugr-py-v0.5.0) (2024-07-29)
 
 
diff --git a/hugr-py/pyproject.toml b/hugr-py/pyproject.toml
index ad4edfae7b..93c527c707 100644
--- a/hugr-py/pyproject.toml
+++ b/hugr-py/pyproject.toml
@@ -13,7 +13,7 @@ classifiers = [
     "Topic :: Scientific/Engineering",
 ]
 name = "hugr"
-version = "0.5.0"
+version = "0.6.0"
 description = "Quantinuum's common representation for quantum programs"
 #keywords = []
 authors = ["TKET development team <tket-support@cambridgequantum.com>"]
diff --git a/hugr-py/src/hugr/__init__.py b/hugr-py/src/hugr/__init__.py
index a5aabf025f..0accc38534 100644
--- a/hugr-py/src/hugr/__init__.py
+++ b/hugr-py/src/hugr/__init__.py
@@ -4,7 +4,7 @@
 
 # This is updated by our release-please workflow, triggered by this
 # annotation: x-release-please-version
-__version__ = "0.5.0"
+__version__ = "0.6.0"
 
 
 def get_serialization_version() -> str: