diff --git a/flask-blueprint/requirements.txt b/flask-blueprint/requirements.txt
index 03ae65a..446ca71 100644
--- a/flask-blueprint/requirements.txt
+++ b/flask-blueprint/requirements.txt
@@ -1,5 +1,5 @@
 aniso8601==8.0.0
-Babel==2.7.0
+Babel==2.9.1
 blinker==1.4
 Click==7.0
 Flask==1.1.1