diff --git a/tox.ini b/tox.ini
index e1cb260..70fc899 100644
--- a/tox.ini
+++ b/tox.ini
@@ -20,8 +20,8 @@ deps =
   django-webtest<1.9.3
   WebTest
   mock<4
-  psycopg2-binary
-  psycopg2
+  psycopg2-binary<2.9
+  psycopg2<2.9
   django>=1.11,<2.3
   https://git.entrouvert.org/debian/django-ckeditor.git/snapshot/django-ckeditor-main.tar.gz
   https://git.entrouvert.org/combo.git/snapshot/combo-main.tar.gz