diff --git a/openapi.json b/openapi.json
index 6b693ad..a8c91c5 100755
--- a/openapi.json
+++ b/openapi.json
@@ -9936,6 +9936,12 @@
           "metadata": {
             "$ref": "#/components/schemas/Metadata"
           },
+          "service_account_id": {
+            "description": "Identifier of the system-managed service account associated with this reader.\nPresent only for readers that are already paired.\nThis field is currently in beta and may change.",
+            "type": "string",
+            "format": "uuid",
+            "x-beta": true
+          },
           "created_at": {
             "description": "The timestamp of when the reader was created.",
             "type": "string",
diff --git a/src/Types/Reader.php b/src/Types/Reader.php
index 952985e..71706f1 100644
--- a/src/Types/Reader.php
+++ b/src/Types/Reader.php
@@ -50,6 +50,15 @@ class Reader
      */
     public ?array $metadata = null;
 
+    /**
+     * Identifier of the system-managed service account associated with this reader.
+     * Present only for readers that are already paired.
+     * This field is currently in beta and may change.
+     *
+     * @var string|null
+     */
+    public ?string $serviceAccountId = null;
+
     /**
      * The timestamp of when the reader was created.
      *