diff --git a/tox.ini b/tox.ini
index 30c88ac..5a920bb 100644
--- a/tox.ini
+++ b/tox.ini
@@ -19,8 +19,8 @@ deps =
   pytest-django
   WebTest
   django-webtest
-  psycopg2-binary
-  psycopg2
+  psycopg2-binary<2.9
+  psycopg2<2.9
   django-ratelimit<3
   django>=2.2,<2.3
   git+https://git.entrouvert.org/debian/django-ckeditor.git