diff --git a/app/requirements.txt b/app/requirements.txt
index c05bc3f..1276fc1 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -16,7 +16,7 @@ marshmallow-sqlalchemy>=0.12,<0.13
 webargs>=1.4.0,<9
 apispec>=0.20.0,<6.9
 
-bcrypt>=3.1.3,<5
+bcrypt>=3.1.3,<6
 passlib>=1.7.1,<2
 Flask-OAuthlib>=0.9.4,<0.10
 Flask-Login>=0.4.0,<0.7