diff --git a/bin/tests/system/dnstap/ns1/named.conf.in b/bin/tests/system/dnstap/ns1/named.conf.in
index 0e54757c27..a294d94b05 100644
--- a/bin/tests/system/dnstap/ns1/named.conf.in
+++ b/bin/tests/system/dnstap/ns1/named.conf.in
@@ -26,6 +26,7 @@ options {
 	dnstap { all; };
 	send-cookie no;
 	require-server-cookie no;
+	dnssec-validation yes;
 };
 
 key rndc_key {
diff --git a/bin/tests/system/dnstap/ns2/named.conf.in b/bin/tests/system/dnstap/ns2/named.conf.in
index d1043e25ee..ede08cea5b 100644
--- a/bin/tests/system/dnstap/ns2/named.conf.in
+++ b/bin/tests/system/dnstap/ns2/named.conf.in
@@ -26,6 +26,7 @@ options {
 	dnstap { all; };
 	send-cookie no;
 	require-server-cookie no;
+	dnssec-validation yes;
 };
 
 key rndc_key {
diff --git a/bin/tests/system/dnstap/ns3/named.conf.in b/bin/tests/system/dnstap/ns3/named.conf.in
index 18b7c3e647..a55de06f9f 100644
--- a/bin/tests/system/dnstap/ns3/named.conf.in
+++ b/bin/tests/system/dnstap/ns3/named.conf.in
@@ -27,6 +27,7 @@ options {
 	send-cookie no;
 	require-server-cookie no;
 	minimal-responses no;
+	dnssec-validation yes;
 };
 
 server 10.53.0.1 { tcp-only yes; };
diff --git a/bin/tests/system/dnstap/ns4/named.conf.in b/bin/tests/system/dnstap/ns4/named.conf.in
index 3aa9dd62c4..64c74b5f13 100644
--- a/bin/tests/system/dnstap/ns4/named.conf.in
+++ b/bin/tests/system/dnstap/ns4/named.conf.in
@@ -26,6 +26,7 @@ options {
 	dnstap { all; };
 	send-cookie no;
 	require-server-cookie no;
+	dnssec-validation yes;
 };
 
 server 10.53.0.1 { tcp-only yes; };