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/sdk/src/resources/readers/index.ts b/sdk/src/resources/readers/index.ts
index e9a1065..eaf9bf1 100644
--- a/sdk/src/resources/readers/index.ts
+++ b/sdk/src/resources/readers/index.ts
@@ -85,6 +85,12 @@ export type Reader = {
   status: ReaderStatus;
   device: ReaderDevice;
   metadata?: Metadata;
+  /**
+   * 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.
+   */
+  service_account_id?: string;
   /**
    * The timestamp of when the reader was created.
    */