diff --git a/src/openhound_okta/models/client_apps.py b/src/openhound_okta/models/client_apps.py
index 67c053e..fac31dd 100644
--- a/src/openhound_okta/models/client_apps.py
+++ b/src/openhound_okta/models/client_apps.py
@@ -6,7 +6,7 @@
 
 
 class JWK(BaseModel):
-    kid: str
+    kid: str | None = None
     status: str | None = None
     last_updated: datetime | None = Field(default=None, alias="lastUpdated")
     created: datetime | None = None
diff --git a/tests/test_application_jwk.py b/tests/test_application_jwk.py
new file mode 100644
index 0000000..7fdec8e
--- /dev/null
+++ b/tests/test_application_jwk.py
@@ -0,0 +1,37 @@
+from openhound_okta.models import ClientApplication
+
+
+def test_application_accepts_jwk_without_kid():
+    """Regression test for OAuth clients whose embedded JWKS has a key without a kid.
+
+    The ``kid`` member is optional in RFC 7517, and Okta accepts keys registered
+    through the Apps API or dynamic client registration without one. Such keys
+    come back from GET /oauth2/v1/clients with ``kid: null`` (or absent). The
+    client model previously required ``kid``, so DLT discarded the whole client
+    row during validation and the client's role assignments never reached the
+    graph. Only ``client_id`` and ``application_type`` are read from this model,
+    so a missing ``kid`` must not reject the client.
+    """
+    client = ClientApplication.model_validate(
+        {
+            "client_id": "0oa1client",
+            "application_type": "service",
+            "token_endpoint_auth_method": "private_key_jwt",
+            "jwks": {
+                "keys": [
+                    {
+                        "kid": None,
+                        "status": "ACTIVE",
+                        "created": "2026-01-01T00:00:00Z",
+                        "lastUpdated": "2026-01-02T00:00:00Z",
+                    },
+                    {
+                        "status": "ACTIVE",
+                    },
+                ]
+            },
+        }
+    )
+
+    assert client.client_id == "0oa1client"
+    assert [key.kid for key in client.jwks.keys] == [None, None]