diff --git a/CHANGELOG.md b/CHANGELOG.md
index e955e628..311ea3c9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,31 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
+## [2.1.1] - 2023-02-16
+
+### Changed
+
+- Added COLLECTIVE_RETURN to PERMITTED_OBSERVATIONS.
+- Split install.sh into three scripts.
+- Move from yapf to black.
+- Remove debug observations to speed up environment stepping.
+
+### Fixed
+
+- Add Lua 5.2 compatibility for `unpack`.
+
+### Removed
+
+- SubstrateWrappers previously needed for the v1 bots.
+
+### Added
+
+- Colab for visualizing evaluation results.
+- Tests for the examples.
+- Mocks of specific substrates and scenarios, for use in testing.
+- Helper for setting world.rgb spec.
+
+
 ## [2.1.0] - 2022-12-06
 
 ### Changed
@@ -32,7 +57,7 @@ for detailed information on the new substrates, bots, and scenarios.
 ### Changed
 
 - Removed all v1 scenarios, bots, and substrates and replaced with new versions.
-- Scenarios now support heterogenous roles, which must be specified at build
+- Scenarios now support heterogeneous roles, which must be specified at build
   time.
 - Various improvements to `examples` and their documentation.
 
diff --git a/notebooks/evaluation_results.ipynb b/notebooks/evaluation_results.ipynb
index 37724935..217f4933 100644
--- a/notebooks/evaluation_results.ipynb
+++ b/notebooks/evaluation_results.ipynb
@@ -268,7 +268,7 @@
       "outputs": [],
       "source": [
         "# @title Load scenario results\n",
-        "path = 'https://storage.googleapis.com/dm-meltingpot/meltingpot-results-2.1.0.feather'  # @param {type: 'string'}\n",
+        "path = 'https://storage.googleapis.com/dm-meltingpot/meltingpot-results-2.1.1.feather'  # @param {type: 'string'}\n",
         "\n",
         "def load_scenario_results(path):\n",
         "  results = pd.read_feather(path)\n",
diff --git a/setup.py b/setup.py
index ac2ce9f7..85f514bc 100644
--- a/setup.py
+++ b/setup.py
@@ -20,14 +20,15 @@
 
 setuptools.setup(
     name='dm-meltingpot',
-    version='2.1.0',
+    version='2.1.1',
     license='Apache 2.0',
     license_files=['LICENSE'],
     url='https://github.com/deepmind/meltingpot',
     download_url='https://github.com/deepmind/meltingpot',
     author='DeepMind',
     author_email='noreply@google.com',
-    description='A suite of test scenarios for multi-agent reinforcement learning.',
+    description=(
+        'A suite of test scenarios for multi-agent reinforcement learning.'),
     long_description=open('README.md').read(),
     long_description_content_type='text/markdown',
     keywords='multi-agent reinforcement-learning python machine-learning',