diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 65c58e81..5692a58c 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-    "tket2-py": "0.4.1",
+    "tket2-py": "0.4.2",
     "tket2-eccs": "0.2.0"
 }
\ No newline at end of file
diff --git a/tket2-py/CHANGELOG.md b/tket2-py/CHANGELOG.md
index 15805ab5..97589b1b 100644
--- a/tket2-py/CHANGELOG.md
+++ b/tket2-py/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.2](https://github.com/CQCL/tket2/compare/tket2-py-v0.4.1...tket2-py-v0.4.2) (2024-10-21)
+
+
+### Reverts
+
+* "Support python 3.13 ([#653](https://github.com/CQCL/tket2/issues/653))" ([#657](https://github.com/CQCL/tket2/issues/657)) ([3fb67ac](https://github.com/CQCL/tket2/commit/3fb67acf5e860fba8f8e1b9e6c5836846a0fcb7d))
+
 ## [0.4.1](https://github.com/CQCL/tket2/compare/tket2-py-v0.4.0...tket2-py-v0.4.1) (2024-10-10)
 
 
diff --git a/tket2-py/pyproject.toml b/tket2-py/pyproject.toml
index 553e54bd..cce177d1 100644
--- a/tket2-py/pyproject.toml
+++ b/tket2-py/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "tket2"
-version = "0.4.1"
+version = "0.4.2"
 requires-python = ">=3.10,<3.13"
 description = "Quantinuum's TKET2 Quantum Compiler"
 license = { file = "LICENCE" }
diff --git a/tket2-py/tket2/__init__.py b/tket2-py/tket2/__init__.py
index 3fcf28cf..dcdf3770 100644
--- a/tket2-py/tket2/__init__.py
+++ b/tket2-py/tket2/__init__.py
@@ -16,4 +16,4 @@
 
 # This is updated by our release-please workflow, triggered by this
 # annotation: x-release-please-version
-__version__ = "0.4.1"
+__version__ = "0.4.2"