diff --git a/cmd/sdns-proxy/sdns-proxy.go b/cmd/sdns-proxy/sdns-proxy.go
index 3a1b00b..05c5279 100644
--- a/cmd/sdns-proxy/sdns-proxy.go
+++ b/cmd/sdns-proxy/sdns-proxy.go
@@ -61,6 +61,7 @@ func (q *QueryCmd) Run() error {
 	msg.SetQuestion(dns.Fqdn(q.DomainName), qTypeUint)
 	msg.Id = dns.Id()
 	msg.RecursionDesired = true
+	msg.SetEdns0(4096, q.DNSSEC)
 
 	logger.Debug("Sending DNS query: ID=%d, Question=%s %s", msg.Id, q.DomainName, q.QueryType)
 	_, recvMsg, err := dnsClient.Query(msg)
diff --git a/internal/qol/measurement.go b/internal/qol/measurement.go
index 175ceb8..fbdbf96 100644
--- a/internal/qol/measurement.go
+++ b/internal/qol/measurement.go
@@ -202,6 +202,7 @@ func (r *MeasurementRunner) performQuery(dnsClient client.DNSClient, domain, ups
 	msg.Id = dns.Id()
 	msg.RecursionDesired = true
 	msg.SetQuestion(dns.Fqdn(domain), qType)
+	msg.SetEdns0(4096, r.config.DNSSEC)
 
 	start := time.Now()
 	metric.Timestamp = start