diff --git a/requirements.txt b/requirements.txt
index 326ed7f6..dd8bb056 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,7 @@ connexion~=2.7.0
 flask~=1.1.2
 flask-sqlalchemy
 jsonschema~=3.2.0
-sqlalchemy
+sqlalchemy<2.0
 swagger-ui-bundle
 PyJWT~=1.7.1
+markupsafe==2.0.1