diff --git a/CHANGELOG.md b/CHANGELOG.md
index b0e2d90..3c7e70e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,10 @@ The format is based on [Keep a
 Changelog](https://keepachangelog.com/en/1.0.0/), and this project
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased] - TBD
+### Changed
+- Bumped `jinja2` to version 3.1.5 in `docs/requirements.txt` to fix a security issue
+
 ## [14.5.1] - 2025-01-10
 ### Added
 - Added code to `src/CMakeLists.txt` to build & install the KPP standalone executable when `fullchem` or `custom` mechanisms are selected
diff --git a/docs/requirements.txt b/docs/requirements.txt
index 71e269d..c0752da 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -12,4 +12,4 @@ sphinxcontrib-bibtex==2.6.2
 sphinx-autobuild==2021.3.14
 recommonmark==0.7.1
 docutils==0.20.1
-jinja2==3.1.4
+jinja2==3.1.5