diff --git a/setup.cfg b/setup.cfg
index c18feda..c14bb99 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -28,7 +28,7 @@ install_requires =
     flask_sqlalchemy>=2.5
     # Importlib requirement can be dropped when python requirement is >= 3.10
     importlib_metadata>=4.3
-    sqlalchemy>=1.4.26
+    sqlalchemy>=1.4.26, <2.0
     toml
     werkzeug