diff --git a/debian/etc/passbook/config.yml b/debian/etc/passbook/config.yml
index 9fd285802..ad373bd39 100644
--- a/debian/etc/passbook/config.yml
+++ b/debian/etc/passbook/config.yml
@@ -11,6 +11,8 @@ debug: false
 secure_proxy_header:
   HTTP_X_FORWARDED_PROTO: https
 rabbitmq: guest:guest@localhost/passbook
+redis: localhost/0
+
 # Error reporting, sends stacktrace to sentry.services.beryju.org
 error_report_enabled: true
 
diff --git a/helm/passbook/templates/passbook-configmap.yaml b/helm/passbook/templates/passbook-configmap.yaml
index 6fcf669a3..1d6ee3ddd 100644
--- a/helm/passbook/templates/passbook-configmap.yaml
+++ b/helm/passbook/templates/passbook-configmap.yaml
@@ -37,7 +37,7 @@ data:
     secure_proxy_header:
       HTTP_X_FORWARDED_PROTO: https
     rabbitmq: "user:{{ .Values.rabbitmq.rabbitmq.password }}@{{ .Release.Name }}-rabbitmq"
-    redis: ":{{ .Values.redis.password }}@{{ .Release.Name }}-redis-master"
+    redis: ":{{ .Values.redis.password }}@{{ .Release.Name }}-redis-master/0"
     # Error reporting, sends stacktrace to sentry.services.beryju.org
     error_report_enabled: {{ .Values.config.error_reporting }}
 
diff --git a/passbook/lib/default.yml b/passbook/lib/default.yml
index 450581a93..b36d74f65 100644
--- a/passbook/lib/default.yml
+++ b/passbook/lib/default.yml
@@ -30,7 +30,7 @@ debug: false
 secure_proxy_header:
   HTTP_X_FORWARDED_PROTO: https
 rabbitmq: guest:guest@localhost/passbook
-redis: localhost
+redis: localhost/0
 # Error reporting, sends stacktrace to sentry.services.beryju.org
 error_report_enabled: true
 secret_key: 9$@r!d^1^jrn#fk#1#@ks#9&i$^s#1)_13%$rwjrhd=e8jfi_s