diff --git a/src/OAuth1/AbstractProvider.php b/src/OAuth1/AbstractProvider.php
index 9ba50df..1099952 100644
--- a/src/OAuth1/AbstractProvider.php
+++ b/src/OAuth1/AbstractProvider.php
@@ -5,6 +5,7 @@
 use Illuminate\Http\RedirectResponse;
 use InvalidArgumentException;
 use Laravel\Socialite\One\AbstractProvider as BaseProvider;
+use League\OAuth1\Client\Credentials\CredentialsException;
 use League\OAuth1\Client\Credentials\TokenCredentials;
 use SocialiteProviders\Manager\ConfigTrait;
 use SocialiteProviders\Manager\Contracts\ConfigInterface as Config;
@@ -39,6 +40,8 @@ public static function serviceContainerKey($providerName)
 
     /**
      * {@inheritdoc}
+     *
+     * @throws \League\OAuth1\Client\Credentials\CredentialsException
      */
     public function user()
     {
@@ -86,7 +89,7 @@ public function userFromTokenAndSecret($token, $secret)
     /**
      * Redirect the user to the authentication page for the provider.
      *
-     * @return RedirectResponse
+     * @return \Illuminate\Http\RedirectResponse
      */
     public function redirect()
     {
diff --git a/src/SocialiteWasCalled.php b/src/SocialiteWasCalled.php
index ff299f0..ab33efd 100644
--- a/src/SocialiteWasCalled.php
+++ b/src/SocialiteWasCalled.php
@@ -150,7 +150,7 @@ protected function buildOAuth2Provider(SocialiteManager $socialite, $providerCla
      *
      * @throws \SocialiteProviders\Manager\Exception\MissingConfigException
      */
-    protected function getConfig($providerClass, $providerName)
+    protected function getConfig(string $providerClass, string $providerName)
     {
         return $this->configRetriever->fromServices(
             $providerName, $providerClass::additionalConfigKeys()