diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index cd1458b..21df50e 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -4,6 +4,14 @@ Changelog
 Beta Releases
 -------------
 
+2.1.1
+~~~~~
+
+    - Includes specific test environments for ``coverage`` versions 4 and 5 with appropriate mocked
+      ``.coverage`` data outputs (JSON or SQL based on version).
+    - A new ``tox`` test environment called ``cov4`` is added, with a new ``pytest`` marker
+      ``pytest.mark.coverage`` for test selection.
+
 2.1.0
 ~~~~~
 
diff --git a/docs/commandline.rst b/docs/commandline.rst
index c7e8f17..1e33f30 100644
--- a/docs/commandline.rst
+++ b/docs/commandline.rst
@@ -109,6 +109,8 @@ beginning of the trials if coverage is ignored.
 
     ... continued output...
 
+.. versionadded:: 2.1.0
+    Support for ``coverage`` version 4.x and 5.x.
 
 Auto-detected package structures
 --------------------------------
diff --git a/mutatest/__init__.py b/mutatest/__init__.py
index 067704b..a2dc3e4 100644
--- a/mutatest/__init__.py
+++ b/mutatest/__init__.py
@@ -1,6 +1,6 @@
 """Mutation initialization.
 """
-__version__ = "2.1.0"
+__version__ = "2.1.1"
 
 __title__ = "mutatest"
 __description__ = "Python mutation testing: test your tests!"