diff --git a/requirements.txt b/requirements.txt
index 5c731bb..692e11a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,7 +6,7 @@ dash-table==4.5.1
 dash-auth==1.3.2
 dash-elasticsearch-autosuggest==1.1.0
 pymatgen==2019.9.8
-flask==1.1.1
+flask==2.2.5
 Flask-Caching==1.7.2
 gunicorn==19.9.0
 pandas==0.25.1