diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e6e8ce7c..87776faf 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    "tket2-py": "0.1.0a3"
+    "tket2-py": "0.1.0a4"
 }
\ No newline at end of file
diff --git a/pyproject.toml b/pyproject.toml
index 1db6df19..447a3231 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "tket2-py"
-version = "0.1.0a3"
+version = "0.1.0a4"
 description = "pytket extension for the tket 2 compiler"
 classifiers = [
     "Environment :: Console",
@@ -68,7 +68,7 @@ authors = [
 maintainers = [
     { name = "TKET development team", email = "tket-support@quantinuum.com" },
 ]
-version = "0.1.0a3"
+version = "0.1.0a4"
 description = "pytket extension for the tket 2 compiler"
 requires-python = ">=3.10"
 license = { file = "LICENCE" }
diff --git a/tket2-py/CHANGELOG.md b/tket2-py/CHANGELOG.md
index c832def6..7ac12681 100644
--- a/tket2-py/CHANGELOG.md
+++ b/tket2-py/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.1.0a4](https://github.com/CQCL/tket2/compare/tket2-py-v0.1.0...tket2-py-v0.1.0a4) (2024-07-15)
+
+
+### Bug Fixes
+
+* Recompile ecc sets after [#441](https://github.com/CQCL/tket2/issues/441) ([#484](https://github.com/CQCL/tket2/issues/484)) ([1122fa4](https://github.com/CQCL/tket2/commit/1122fa453790fe5fd3433d4e028fb327949d9619))
+
 ## [0.1.0a3](https://github.com/CQCL/tket2/compare/tket2-py-v0.1.0...tket2-py-v0.1.0a3) (2024-07-12)