diff --git a/phpseclib/Net/SSH2.php b/phpseclib/Net/SSH2.php
index 2da90962..49b9706f 100644
--- a/phpseclib/Net/SSH2.php
+++ b/phpseclib/Net/SSH2.php
@@ -1339,7 +1339,7 @@ class SSH2
      */
     private function generate_identifier()
     {
-        $identifier = 'SSH-2.0-phpseclib_2.0';
+        $identifier = 'SSH-2.0-phpseclib_3.0';
 
         $ext = [];
         if (extension_loaded('sodium')) {
diff --git a/tests/Unit/Net/SSH2Test.php b/tests/Unit/Net/SSH2Test.php
index 212ed636..8703709a 100644
--- a/tests/Unit/Net/SSH2Test.php
+++ b/tests/Unit/Net/SSH2Test.php
@@ -39,7 +39,7 @@ class Unit_Net_SSH2Test extends PhpseclibTestCase
     public function testGenerateIdentifier()
     {
         $identifier = self::callFunc($this->createSSHMock(), 'generate_identifier');
-        $this->assertStringStartsWith('SSH-2.0-phpseclib_2.0', $identifier);
+        $this->assertStringStartsWith('SSH-2.0-phpseclib_3.0', $identifier);
 
         if (function_exists('\\Sodium\\library_version_major')) {
             $this->assertContains('libsodium', $identifier);