diff --git a/src/Guard.php b/src/Guard.php
index 0054805..b14d27f 100644
--- a/src/Guard.php
+++ b/src/Guard.php
@@ -30,18 +30,27 @@ class Guard
      */
     protected $provider;
 
+    /**
+     * Whether to track the last used timestamp.
+     *
+     * @var bool
+     */
+    protected $trackLastUsedAt;
+
     /**
      * Create a new guard instance.
      *
      * @param  \Illuminate\Contracts\Auth\Factory  $auth
      * @param  int  $expiration
      * @param  string  $provider
+     * @param  bool  $trackLastUsedAt
      */
-    public function __construct(AuthFactory $auth, $expiration = null, $provider = null)
+    public function __construct(AuthFactory $auth, $expiration = null, $provider = null, $trackLastUsedAt = true)
     {
         $this->auth = $auth;
         $this->expiration = $expiration;
         $this->provider = $provider;
+        $this->trackLastUsedAt = $trackLastUsedAt;
     }
 
     /**
@@ -76,7 +85,9 @@ public function __invoke(Request $request)
 
             event(new TokenAuthenticated($accessToken));
 
-            $this->updateLastUsedAt($accessToken);
+            if ($this->trackLastUsedAt) {
+                $this->updateLastUsedAt($accessToken);
+            }
 
             return $tokenable;
         }
diff --git a/src/SanctumServiceProvider.php b/src/SanctumServiceProvider.php
index 9aed959..a50c855 100644
--- a/src/SanctumServiceProvider.php
+++ b/src/SanctumServiceProvider.php
@@ -103,7 +103,12 @@ protected function configureGuard()
     protected function createGuard($auth, $config)
     {
         return new RequestGuard(
-            new Guard($auth, config('sanctum.expiration'), $config['provider']),
+            new Guard(
+                $auth,
+                config('sanctum.expiration'),
+                $config['provider'],
+                config('sanctum.last_used_at', true)
+            ),
             request(),
             $auth->createUserProvider($config['provider'] ?? null)
         );
diff --git a/tests/Feature/GuardTest.php b/tests/Feature/GuardTest.php
index 29e9199..666aa1a 100644
--- a/tests/Feature/GuardTest.php
+++ b/tests/Feature/GuardTest.php
@@ -418,4 +418,65 @@ public static function invalidTokenDataProvider(): array
             ['Bearer 1ABC|'],
         ];
     }
+
+    public function test_last_used_at_is_not_tracked_when_disabled()
+    {
+        $factory = Mockery::mock(AuthFactory::class);
+
+        $guard = new Guard($factory, null, 'users', false);
+
+        $webGuard = Mockery::mock(stdClass::class);
+
+        $factory->shouldReceive('guard')
+            ->with('web')
+            ->andReturn($webGuard);
+
+        $webGuard->shouldReceive('user')->once()->andReturn(null);
+
+        $request = Request::create('/', 'GET');
+        $request->headers->set('Authorization', 'Bearer test');
+
+        $token = PersonalAccessTokenFactory::new()->for(
+            $user = UserFactory::new()->create(), 'tokenable'
+        )->create([
+            'name' => 'Test',
+            'last_used_at' => null,
+        ]);
+
+        $returnedUser = $guard->__invoke($request);
+
+        $this->assertEquals($user->id, $returnedUser->id);
+        $this->assertEquals($token->id, $returnedUser->currentAccessToken()->id);
+        $this->assertNull($returnedUser->currentAccessToken()->last_used_at);
+    }
+
+    public function test_last_used_at_is_tracked_when_enabled()
+    {
+        $factory = Mockery::mock(AuthFactory::class);
+
+        $guard = new Guard($factory, null, 'users', true);
+
+        $webGuard = Mockery::mock(stdClass::class);
+
+        $factory->shouldReceive('guard')
+            ->with('web')
+            ->andReturn($webGuard);
+
+        $webGuard->shouldReceive('user')->once()->andReturn(null);
+
+        $request = Request::create('/', 'GET');
+        $request->headers->set('Authorization', 'Bearer test');
+
+        $token = PersonalAccessTokenFactory::new()->for(
+            $user = UserFactory::new()->create(), 'tokenable'
+        )->create([
+            'name' => 'Test',
+        ]);
+
+        $returnedUser = $guard->__invoke($request);
+
+        $this->assertEquals($user->id, $returnedUser->id);
+        $this->assertEquals($token->id, $returnedUser->currentAccessToken()->id);
+        $this->assertInstanceOf(DateTimeInterface::class, $returnedUser->currentAccessToken()->last_used_at);
+    }
 }