diff --git a/alcf/__init__.py b/alcf/__init__.py
index a433358..486e7ae 100644
--- a/alcf/__init__.py
+++ b/alcf/__init__.py
@@ -1,4 +1,4 @@
-__version__ = '2.1.2'
+__version__ = '2.2.0'
 
 META = {
 	'software': 'ALCF (https://alcf.peterkuma.net)',
diff --git a/docs/installation/index.md b/docs/installation/index.md
index d0bf445..f10fe84 100644
--- a/docs/installation/index.md
+++ b/docs/installation/index.md
@@ -211,12 +211,23 @@ the [Semantic Versioning](https://semver.org). Installation instructions
 have been changing with versions. Please follow the installation instructions
 in the documentation of the particular version.
 
+#### [2.2.0](https://github.com/alcf-lidar/alcf/releases/tag/v2.2.0) (2024-12-22)
+
+<details>
+<summary>Release notes</summary>
+<ul>
+<li>Fixed handling of the time argument.<li>
+<li>Fixed backscatter_hist and backscatter_sd_hist units in the metadata and documentation.</li>
+<li>Improvements in the documentation.</li>
+</ul>
+</details>
+
 #### [2.1.2](https://github.com/alcf-lidar/alcf/releases/tag/v2.1.2) (2024-10-18)
 
 <details>
 <summary>Release notes</summary>
 <ul>
-<li>Fix reading certain Vaisala CL61 files, in which the time dimension is "time" instead of "profile".</li>
+<li>Fixed reading certain Vaisala CL61 files, in which the time dimension is "time" instead of "profile".</li>
 </ul>
 </details>
 
diff --git a/setup.py b/setup.py
index 6b1ac01..ace68bf 100755
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@ def run(self):
 
 setup(
 	name='alcf',
-	version='2.1.2',
+	version='2.2.0',
 	description='Automatic Lidar and Ceilometer Framework (ALCF)',
 	author='Peter Kuma, Adrian J. McDonald, Olaf Morgenstern, Richard Querel, Israel Silber, Connor J. Flynn',
 	author_email='peter@peterkuma.net',