diff --git a/.bumpversion.toml b/.bumpversion.toml
index 5d80ffb..e382e19 100644
--- a/.bumpversion.toml
+++ b/.bumpversion.toml
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "v0.12.0"
+current_version = "v0.12.1"
 commit = true
 commit_args = "--no-verify"
 tag = true
diff --git a/README.md b/README.md
index 24bcec4..5e4068e 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # invrs-opt - Optimization algorithms for inverse design
-![Continuous integration](https://github.com/invrs-io/opt/actions/workflows/build-ci.yml/badge.svg)
-![PyPI version](https://img.shields.io/pypi/v/invrs-opt)
+[![Continuous integration](https://github.com/invrs-io/opt/actions/workflows/build-ci.yml/badge.svg)](https://github.com/invrs-io/opt/actions)
+[![PyPI version](https://img.shields.io/pypi/v/invrs-opt)](https://pypi.org/project/invrs-opt/)
 
 ## Overview
 
diff --git a/pyproject.toml b/pyproject.toml
index c899b00..e2fc362 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,12 +1,12 @@
 [project]
 
 name = "invrs_opt"
-version = "v0.12.0"
+version = "v0.12.1"
 description = "Algorithms for inverse design"
 keywords = ["topology", "optimization", "jax", "inverse design"]
 readme = "README.md"
 requires-python = ">=3.7"
-license = {file = "LICENSE"}
+license = "MIT"
 
 authors = [
     {name = "Martin F. Schubert", email = "mfschubert@gmail.com"},
diff --git a/src/invrs_opt/__init__.py b/src/invrs_opt/__init__.py
index 3893ddb..b034960 100644
--- a/src/invrs_opt/__init__.py
+++ b/src/invrs_opt/__init__.py
@@ -3,7 +3,7 @@
 Copyright (c) 2025 invrs.io LLC
 """
 
-__version__ = "v0.12.0"
+__version__ = "v0.12.1"
 __author__ = "Martin F. Schubert <mfschubert@gmail.com>"
 
 from invrs_opt import parameterization as parameterization