diff --git a/CHANGELOG.md b/CHANGELOG.md
index a5315b7059..830596e416 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,7 @@
 # [Unreleased](https://github.com/pybamm-team/PyBaMM/)
 
+# [v22.1](https://github.com/pybamm-team/PyBaMM/tree/v22.1) - 2022-01-28
+
 ## Features
 
 -   Half-cell models can now be run with "surface form" ([#1913](https://github.com/pybamm-team/PyBaMM/pull/1913))
diff --git a/CITATION.cff b/CITATION.cff
index e308bc107b..97631285bb 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -24,6 +24,6 @@ keywords:
   - "expression tree"
   - "python"
   - "symbolic differentiation"
-version: "21.12"
+version: "22.1"
 repository-code: "https://github.com/pybamm-team/PyBaMM"
 title: "Python Battery Mathematical Modelling (PyBaMM)"
diff --git a/docs/conf.py b/docs/conf.py
index bd0edc7bf2..2c6d42c1c4 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -27,7 +27,7 @@
 author = "The PyBaMM Team"
 
 # The short X.Y version
-version = "21.12"
+version = "22.1"
 # The full version, including alpha/beta/rc tags
 release = version
 
diff --git a/pybamm/version.py b/pybamm/version.py
index 21412ff1ec..30adf3307a 100644
--- a/pybamm/version.py
+++ b/pybamm/version.py
@@ -1 +1 @@
-__version__ = "21.12"
+__version__ = "22.1"
diff --git a/vcpkg.json b/vcpkg.json
index a709c95b52..c367a96bc5 100644
--- a/vcpkg.json
+++ b/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "pybamm",
-  "version-string": "21.12",
+  "version-string": "22.1",
   "dependencies": [
     {
       "name": "sundials",