diff --git a/main/requirements.txt b/main/requirements.txt
index 9fca032f..1a7b761e 100644
--- a/main/requirements.txt
+++ b/main/requirements.txt
@@ -4,7 +4,7 @@ flask-babel==1.0.0
 flask-login==0.5.0
 flask-restful==0.3.8
 flask-wtf==0.14.3
-flask==1.1.2
+flask==1.1.3
 git+https://github.com/joernhees/babel@zip-2.3.4
 googleapis_common_protos==1.52.0
 jinja2==2.11.3