diff --git a/requirements.txt b/requirements.txt
index 5d1444b..c66e7fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ attrs==20.2.0
 black==20.8b1
 click==7.1.2
 cssmin==0.2.0
-Flask==1.1.2
+Flask==1.1.4
 Flask-Assets==2.0
 iniconfig==1.1.1
 isort==5.6.4