diff --git a/setup.py b/setup.py
index a7c9f2aa..897d1d2a 100644
--- a/setup.py
+++ b/setup.py
@@ -55,7 +55,7 @@ install_requires = [
     'WebTest>=2.0.18',
     'ConfigObj',
     'Markdown',
-    'sqlalchemy',
+    'sqlalchemy<1.4.0',
     'itsdangerous',
     'pytz',
     'sphinx',