diff --git a/openapi.json b/openapi.json
index 6b693ade..a8c91c58 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/sumup/readers/types.py b/sumup/readers/types.py
index 150d3525..2d1211f4 100755
--- a/sumup/readers/types.py
+++ b/sumup/readers/types.py
@@ -99,6 +99,14 @@ class Reader(pydantic.BaseModel):
 	Max properties: 64
 	"""
 
+    service_account_id: typing.Optional[str] = None
+    """
+	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.
+	Format: uuid
+	"""
+
 
 class Problem(pydantic.BaseModel):
     """