diff --git a/requirements.txt b/requirements.txt
index 5823585..83b650e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 six==1.16.0
 cachetools==4.0.0
 requests==2.22.0
-Flask==1.1.2
+Flask==2.3.2
 Flask-Caching==1.8.0
 Flask-DebugToolbar==0.11.0
 PyLTI1p3==1.7.0