diff --git a/docs/misc/changelog.rst b/docs/misc/changelog.rst
index ffe1d7e11..0784c4689 100644
--- a/docs/misc/changelog.rst
+++ b/docs/misc/changelog.rst
@@ -3,7 +3,7 @@
 Changelog
 ==========
 
-Release 2.2.0a8 (WIP)
+Release 2.2.0a9 (WIP)
 --------------------------
 
 Breaking Changes:
@@ -16,6 +16,8 @@ New Features:
 - Improved error message of the ``env_checker`` for env wrongly detected as GoalEnv (``compute_reward()`` is defined)
 - Improved error message when mixing Gym API with VecEnv API (see GH#1694)
 - Add support for setting ``options`` at reset with VecEnv via the ``set_options()`` method. Same as seeds logic, options are reset at the end of an episode (@ReHoss)
+- Added ``rollout_buffer_class`` and ``rollout_buffer_kwargs`` arguments to off-policy algorithms
+
 
 Bug Fixes:
 ^^^^^^^^^^
diff --git a/stable_baselines3/version.txt b/stable_baselines3/version.txt
index f1f23b30a..b7120ad62 100644
--- a/stable_baselines3/version.txt
+++ b/stable_baselines3/version.txt
@@ -1 +1 @@
-2.2.0a8
+2.2.0a9