diff --git a/src/Endpoints/TLS.php b/src/Endpoints/TLS.php
index ca29420..d92a8b7 100644
--- a/src/Endpoints/TLS.php
+++ b/src/Endpoints/TLS.php
@@ -19,11 +19,11 @@ class TLS implements API
         $this->adapter = $adapter;
     }
 
-    public function enableTLS13($zoneID, $enable=false)
+    public function enableTLS13($zoneID)
     {
         $return = $this->adapter->patch(
             'zones/' . $zoneID . '/settings/tls_1_3',
-            ['value' => $enable ? 'on' : 'off']
+            ['value' => 'on']
         );
         $body = json_decode($return->getBody());
 
@@ -34,6 +34,23 @@ class TLS implements API
         return false;
     }
 
+    public function disableTLS13($zoneID)
+    {
+        $return = $this->adapter->patch(
+            'zones/' . $zoneID . '/settings/tls_1_3',
+            ['value' => 'off']
+        );
+        $body = json_decode($return->getBody());
+
+        if ($body->success) {
+            return true;
+        }
+
+        return false;
+    }
+
+
+
     public function changeMinimumTLSVersion($zoneID, $minimumVersion)
     {
         $return = $this->adapter->patch(
diff --git a/tests/Endpoints/TLSTest.php b/tests/Endpoints/TLSTest.php
index f7d0360..d17aabb 100644
--- a/tests/Endpoints/TLSTest.php
+++ b/tests/Endpoints/TLSTest.php
@@ -23,8 +23,28 @@ class TLSTest extends TestCase
                 $this->equalTo(['value' => 'on'])
             );
 
-        $ZoneTLSSettings = new \Cloudflare\API\Endpoints\TLS($mock);
-        $result = $ZoneTLSSettings->enableTLS13('c2547eb745079dac9320b638f5e225cf483cc5cfdda41', true);
+        $zoneTLSSettings = new \Cloudflare\API\Endpoints\TLS($mock);
+        $result = $zoneTLSSettings->enableTLS13('c2547eb745079dac9320b638f5e225cf483cc5cfdda41', true);
+
+        $this->assertTrue($result);
+    }
+
+    public function testDisableTLS13()
+    {
+        $response = $this->getPsr7JsonResponseForFixture('Endpoints/disableTLS13.json');
+
+        $mock = $this->getMockBuilder(\Cloudflare\API\Adapter\Adapter::class)->getMock();
+        $mock->method('patch')->willReturn($response);
+
+        $mock->expects($this->once())
+            ->method('patch')
+            ->with(
+                $this->equalTo('zones/c2547eb745079dac9320b638f5e225cf483cc5cfdda41/settings/tls_1_3'),
+                $this->equalTo(['value' => 'off'])
+            );
+
+        $zoneTLSSettings = new \Cloudflare\API\Endpoints\TLS($mock);
+        $result = $zoneTLSSettings->disableTLS13('c2547eb745079dac9320b638f5e225cf483cc5cfdda41', true);
 
         $this->assertTrue($result);
     }
@@ -43,8 +63,8 @@ class TLSTest extends TestCase
                 $this->equalTo(['value' => '1.1'])
             );
 
-        $ZoneTLSSettings = new \Cloudflare\API\Endpoints\TLS($mock);
-        $result = $ZoneTLSSettings->changeMinimumTLSVersion('c2547eb745079dac9320b638f5e225cf483cc5cfdda41', '1.1');
+        $zoneTLSSettings = new \Cloudflare\API\Endpoints\TLS($mock);
+        $result = $zoneTLSSettings->changeMinimumTLSVersion('c2547eb745079dac9320b638f5e225cf483cc5cfdda41', '1.1');
 
         $this->assertTrue($result);
     }
diff --git a/tests/Fixtures/Endpoints/disableTLS13.json b/tests/Fixtures/Endpoints/disableTLS13.json
new file mode 100644
index 0000000..5fe9c2c
--- /dev/null
+++ b/tests/Fixtures/Endpoints/disableTLS13.json
@@ -0,0 +1,6 @@
+{
+  "success": true,
+  "errors": [],
+  "messages": [],
+  "result": "off"
+}