diff --git a/requirements.txt b/requirements.txt
index 9480df0..a4bdc60 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 setuptools
 Cython
-SQLAlchemy
+SQLAlchemy<2.1.0
 alembic
 PyYAML
 Flask