diff --git a/roles/dnsmasq/templates/00-options.conf.j2 b/roles/dnsmasq/templates/00-options.conf.j2
index 0bcaa7f..00b3418 100644
--- a/roles/dnsmasq/templates/00-options.conf.j2
+++ b/roles/dnsmasq/templates/00-options.conf.j2
@@ -12,6 +12,9 @@ dhcp-proxy
 # has 3 s timeout during which no other requests are processed
 no-ping
 
+# we have more than 1000 clients
+dhcp-lease-max = 5000
+
 bind-interfaces
 interface = {{ interfaces | map(attribute='name') | join(',') }}