diff --git a/client/src/components/Settings/Dns/Upstream/Examples.js b/client/src/components/Settings/Dns/Upstream/Examples.js
index 2f145b3a..b4e0ce09 100644
--- a/client/src/components/Settings/Dns/Upstream/Examples.js
+++ b/client/src/components/Settings/Dns/Upstream/Examples.js
@@ -10,6 +10,15 @@ const Examples = (props) => (
             <li>
                 <code>94.140.14.140</code>: {props.t('example_upstream_regular')}
             </li>
+            <li>
+                <code>udp://dns-unfiltered.adguard.com</code>: <Trans>example_upstream_udp</Trans>
+            </li>
+            <li>
+                <code>tcp://94.140.14.140</code>: <Trans>example_upstream_tcp</Trans>
+            </li>
+            <li>
+                <code>tcp://dns-unfiltered.adguard.com</code>: <Trans>example_upstream_tcp_hostname</Trans>
+            </li>
             <li>
                 <code>tls://dns-unfiltered.adguard.com</code>:
                 <span>
@@ -67,9 +76,6 @@ const Examples = (props) => (
                     </Trans>
                 </span>
             </li>
-            <li>
-                <code>tcp://94.140.14.140</code>: <Trans>example_upstream_tcp</Trans>
-            </li>
             <li>
                 <code>sdns://...</code>:
                 <span>
diff --git a/internal/dnsforward/http.go b/internal/dnsforward/http.go
index b0de11b9..773d55ba 100644
--- a/internal/dnsforward/http.go
+++ b/internal/dnsforward/http.go
@@ -404,7 +404,7 @@ func ValidateUpstreams(upstreams []string) (err error) {
 	return nil
 }
 
-var protocols = []string{"tls://", "https://", "tcp://", "sdns://", "quic://"}
+var protocols = []string{"udp://", "tcp://", "tls://", "https://", "sdns://", "quic://"}
 
 func validateUpstream(u string) (useDefault bool, err error) {
 	// Check if the user tries to specify upstream for domain.
diff --git a/internal/dnsforward/http_test.go b/internal/dnsforward/http_test.go
index aa78d978..a501f7dc 100644
--- a/internal/dnsforward/http_test.go
+++ b/internal/dnsforward/http_test.go
@@ -303,6 +303,14 @@ func TestValidateUpstream(t *testing.T) {
 		name:     "valid_default",
 		upstream: "sdns://AQMAAAAAAAAAFDE3Ni4xMDMuMTMwLjEzMDo1NDQzINErR_JS3PLCu_iZEIbq95zkSV2LFsigxDIuUso_OQhzIjIuZG5zY3J5cHQuZGVmYXVsdC5uczEuYWRndWFyZC5jb20",
 		wantErr:  ``,
+	}, {
+		wantDef:  assert.True,
+		name:     "default_udp_host",
+		upstream: "udp://dns.google",
+	}, {
+		wantDef:  assert.True,
+		name:     "default_udp_ip",
+		upstream: "udp://8.8.8.8",
 	}, {
 		wantDef:  assert.False,
 		name:     "valid",