diff --git a/setup.cfg b/setup.cfg
index 14977d59..87e254d6 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,7 +28,7 @@ install_requires =
     cachetools>=4.1,<5
     debts>=0.5,<1
     email_validator>=1.0,<2
-    Flask-Babel>=1.0,<3
+    Flask-Babel>=1.0,<4
     Flask-Cors>=3.0.8,<4
     Flask-Limiter>=2.6,<3
     Flask-Mail>=0.9.1,<1