diff --git a/requirements.txt b/requirements.txt
index 3eaf4a17f..19050ae9c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 certifi==2023.7.22
 babel==2.13.0
-flask-babel==3.1.0
+flask-babel==4.0.0
 flask==2.3.3
 jinja2==3.1.2
 lxml==4.9.3