diff --git a/pyproject.toml b/pyproject.toml
index b3009ac22..df1eaf3b9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,7 +37,7 @@ dependencies = [
     "Flask-Mail>=0.9.1,<1",
     "Flask-Migrate>=2.5.3,<5", # 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",
     "itsdangerous>=2,<3",