diff --git a/docs/about/release-notes.md b/docs/about/release-notes.md
index 432e9fce38..f35cb605eb 100644
--- a/docs/about/release-notes.md
+++ b/docs/about/release-notes.md
@@ -23,6 +23,13 @@ The current and past members of the MkDocs team.
 * [@oprypin](https://github.com/oprypin/)
 * [@ultrabug](https://github.com/ultrabug/)
 
+## Version 1.2.4 (2022-03-26)
+
+* Compatibility with Jinja2 3.1.0 (#2800)
+
+    Due to a breaking change in Jinja2, MkDocs would crash with the message
+    `AttributeError: module 'jinja2' has no attribute 'contextfilter'`
+
 ## Version 1.2.3 (2021-10-12)
 
 * Built-in themes now also support these languages:
diff --git a/mkdocs/__init__.py b/mkdocs/__init__.py
index 69760b0649..33d2a7af39 100644
--- a/mkdocs/__init__.py
+++ b/mkdocs/__init__.py
@@ -2,4 +2,4 @@
 
 
 # For acceptable version formats, see https://www.python.org/dev/peps/pep-0440/
-__version__ = '1.2.3'
+__version__ = '1.2.4'