diff --git a/roles/dns_resolver/templates/dnsdist.conf.j2 b/roles/dns_resolver/templates/dnsdist.conf.j2
index f56da34..d973e67 100644
--- a/roles/dns_resolver/templates/dnsdist.conf.j2
+++ b/roles/dns_resolver/templates/dnsdist.conf.j2
@@ -13,6 +13,10 @@ newServer({address='127.0.0.1:5353', qps=1, name='localhost'})
 addTLSLocal('{{ ansible_default_ipv4.address }}', '/etc/dnsdist/{{ ansible_fqdn }}.crt', '/etc/dnsdist/{{ ansible_fqdn }}.key')
 addTLSLocal('{{ ansible_default_ipv6.address }}', '/etc/dnsdist/{{ ansible_fqdn }}.crt', '/etc/dnsdist/{{ ansible_fqdn }}.key')
 
+-- Disable DoH: see https://support.mozilla.org/en-US/kb/canary-domain-use-application-dnsnet
+addAction('use-application-dns.net', RCodeAction(DNSRCode.NXDOMAIN))
+
+-- HTTP Endpoint for Prometheus
 webserver('0.0.0.0:8053', '{{ prometheus_dnsdist_pass }}', '{{ prometheus_dnsdist_pass }}', {}, '194.156.22.3, 2001:678:ddc::3')
 
 -- disable security status polling via DNS
diff --git a/roles/dns_split/templates/dnsdist.conf.j2 b/roles/dns_split/templates/dnsdist.conf.j2
index 2226580..65cb354 100644
--- a/roles/dns_split/templates/dnsdist.conf.j2
+++ b/roles/dns_split/templates/dnsdist.conf.j2
@@ -10,6 +10,10 @@ newServer({address='127.0.0.1:5353', qps=1, name='localhost'})
 addTLSLocal('{{ batman_ipv4 | ipaddr('address') }}', '/etc/dnsdist/{{ ansible_fqdn }}.crt', '/etc/dnsdist/{{ ansible_fqdn }}.key')
 addTLSLocal('{{ batman_ipv6 | ipaddr('address') }}', '/etc/dnsdist/{{ ansible_fqdn }}.crt', '/etc/dnsdist/{{ ansible_fqdn }}.key')
 
+-- Disable DoH: see https://support.mozilla.org/en-US/kb/canary-domain-use-application-dnsnet
+addAction('use-application-dns.net', RCodeAction(DNSRCode.NXDOMAIN))
+
+-- HTTP Endpoint for Prometheus
 webserver('0.0.0.0:8053', '{{ prometheus_dnsdist_pass }}', '{{ prometheus_dnsdist_pass }}', {}, '194.156.22.3, 2001:678:ddc::3')
 
 -- disable security status polling via DNS