diff --git a/tox.ini b/tox.ini
index df133a4..88d8f75 100644
--- a/tox.ini
+++ b/tox.ini
@@ -36,6 +36,7 @@ deps =
   dnspython
   vobject
   pyproj
+  unidecode
   django-ratelimit<3
   gadjo
   django>=2.2,<2.3