diff --git a/BuildingSystems/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt b/BuildingSystems/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
index b1e0ba3b..e4eb1e93 100644
--- a/BuildingSystems/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
+++ b/BuildingSystems/Resources/src/fluid/heatpumps/calibration/doc/requirements.txt
@@ -5,7 +5,7 @@ charset-normalizer==2.0.12
 docutils==0.17.1
 idna==3.3
 imagesize==1.3.0
-Jinja2==3.0.3
+Jinja2==3.1.3
 latexcodec==2.0.1
 MarkupSafe==2.1.0
 packaging==21.3