diff --git a/setup.cfg b/setup.cfg
index 7a8ac1c4..9eae8312 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -32,7 +32,7 @@ install_requires =
     Flask-Mail>=0.9.1,<1
     Flask-Migrate>=2.5.3,<4  # Not following semantic versioning (e.g. https://github.com/miguelgrinberg/flask-migrate/commit/1af28ba273de6c88544623b8dc02dd539340294b)
     Flask-RESTful>=0.3.9,<1
-    Flask-SQLAlchemy>=2.4,<3
+    Flask-SQLAlchemy>=2.4,<4
     Flask-Talisman>=0.8,<2
     Flask-WTF>=0.14.3,<2
     WTForms>=2.3.1,<3.1