diff --git a/CHANGELOG.md b/CHANGELOG.md
index 856cebb..706bb79 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## v0.5.0 (2023-04-25)
+
+### BREAKING CHANGE
+
+- Removed :mod:`iter_utils` entirely so this API will now no longer work.
+
+### Feat
+
+- **OptPlotter**: add class method `from_autogenerated_figure` (#17)
+
+### Refactor
+
+- **iter_utils.py**: remove :mod:`iter_utils`
+
 ## v0.4.0 (2023-04-21)
 
 ### Feat
diff --git a/pyproject.toml b/pyproject.toml
index e0412d4..9d590e8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [tool.commitizen]
-version = "0.4.0"
+version = "0.5.0"
 version_files = ["pyproject.toml:^version"]
 tag_format = "v$version"
 major_version_zero = true
@@ -9,7 +9,7 @@ formats = "ipynb,myst"
 
 [tool.poetry]
 name = "openscm-calibration"
-version = "0.4.0"
+version = "0.5.0"
 description = ""
 authors = ["Zebedee Nicholls <zebedee.nicholls@climate-energy-college.org>"]
 readme = "README.rst"