diff --git a/README.md b/README.md
index b22976c0f1f..9cb43e89146 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ You can install the PHP SDK with Composer, either run `composer require microsof
 ```
 {
     "require": {
-        "microsoft/microsoft-graph": "^1.104.0"
+        "microsoft/microsoft-graph": "^2.1.0"
     }
 }
 ```
diff --git a/src/Core/GraphConstants.php b/src/Core/GraphConstants.php
index e2021bcf190..bf8cb7a0134 100644
--- a/src/Core/GraphConstants.php
+++ b/src/Core/GraphConstants.php
@@ -23,7 +23,7 @@ final class GraphConstants
     const REST_ENDPOINT = "https://graph.microsoft.com/";
 
     // Define HTTP request constants
-    const SDK_VERSION = "1.104.0";
+    const SDK_VERSION = "2.1.0";
 
     // Define error constants
     const MAX_PAGE_SIZE = 999;