diff --git a/requirements/base.txt b/requirements/base.txt
index 10806428..f5665fe8 100644
--- a/requirements/base.txt
+++ b/requirements/base.txt
@@ -11,7 +11,7 @@ djangorestframework==3.15.2
 furl==2.1.3
 hiredis==3.0.0
 humanize==4.11.0
-mjml-python==1.3.3
+mjml-python==1.3.4
 model-bakery==1.20.0
 osm_opening_hours==0.1.1
 psycopg==3.2.3