diff --git a/lib/PayPal/Api/OpenIdSession.php b/lib/PayPal/Api/OpenIdSession.php
index 30e27d8..2411a93 100644
--- a/lib/PayPal/Api/OpenIdSession.php
+++ b/lib/PayPal/Api/OpenIdSession.php
@@ -53,7 +53,7 @@ class OpenIdSession
         if ($state) {
             $params['state'] = $state;
         }
-        return sprintf("%s/authorize?%s", self::getBaseUrl($config), http_build_query($params));
+        return sprintf("%s/signin/authorize?%s", self::getBaseUrl($config), http_build_query($params));
     }
 
 
@@ -80,7 +80,7 @@ class OpenIdSession
             'redirect_uri' => $redirectUri,
             'logout' => 'true'
         );
-        return sprintf("%s/endsession?%s", self::getBaseUrl($config), http_build_query($params));
+        return sprintf("%s/webapps/auth/protocol/openidconnect/v1/endsession?%s", self::getBaseUrl($config), http_build_query($params));
     }
 
     /**
diff --git a/lib/PayPal/Core/PayPalConstants.php b/lib/PayPal/Core/PayPalConstants.php
index 3d7f6fe..3e98183 100644
--- a/lib/PayPal/Core/PayPalConstants.php
+++ b/lib/PayPal/Core/PayPalConstants.php
@@ -20,8 +20,8 @@ class PayPalConstants
     const APPROVAL_URL = 'approval_url';
 
     const REST_SANDBOX_ENDPOINT = "https://api.sandbox.paypal.com/";
-    const OPENID_REDIRECT_SANDBOX_URL = "https://www.sandbox.paypal.com/signin";
+    const OPENID_REDIRECT_SANDBOX_URL = "https://www.sandbox.paypal.com";
 
     const REST_LIVE_ENDPOINT = "https://api.paypal.com/";
-    const OPENID_REDIRECT_LIVE_URL = "https://www.paypal.com/signin";
+    const OPENID_REDIRECT_LIVE_URL = "https://www.paypal.com";
 }
diff --git a/tests/PayPal/Test/Api/OpenIdSessionTest.php b/tests/PayPal/Test/Api/OpenIdSessionTest.php
index 68976d8..0a5a98d 100644
--- a/tests/PayPal/Test/Api/OpenIdSessionTest.php
+++ b/tests/PayPal/Test/Api/OpenIdSessionTest.php
@@ -85,7 +85,7 @@ class OpenIdSessionTest extends \PHPUnit_Framework_TestCase
         $redirectUri = 'http://mywebsite.com';
         $idToken = 'abc';
 
-        $expectedBaseUrl = "https://www.paypal.com/signin/endsession";
+        $expectedBaseUrl = "https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/endsession";
 
         $this->assertEquals($expectedBaseUrl . "?id_token=$idToken&redirect_uri=" . urlencode($redirectUri) . "&logout=true",
             OpenIdSession::getLogoutUrl($redirectUri, $idToken, $this->context), "Failed case - custom config");