diff --git a/tests/openwisp2/settings.py b/tests/openwisp2/settings.py
index b629203..af6b30b 100644
--- a/tests/openwisp2/settings.py
+++ b/tests/openwisp2/settings.py
@@ -99,7 +99,7 @@
 CHANNEL_LAYERS = {
     "default": {
         "BACKEND": "channels_redis.core.RedisChannelLayer",
-        "CONFIG": {"hosts": ["redis://localhost/9"]},
+        "CONFIG": {"hosts": ["redis://localhost/3"]},
     }
 }
 FORM_RENDERER = "django.forms.renderers.TemplatesSetting"
@@ -223,7 +223,7 @@
     CACHES = {
         "default": {
             "BACKEND": "django_redis.cache.RedisCache",
-            "LOCATION": "redis://localhost/9",
+            "LOCATION": "redis://localhost/0",
             "OPTIONS": {
                 "CLIENT_CLASS": "django_redis.client.DefaultClient",
             },