diff --git a/pyiceberg/catalog/rest.py b/pyiceberg/catalog/rest.py
index 996f921062..7f75ac2e9f 100644
--- a/pyiceberg/catalog/rest.py
+++ b/pyiceberg/catalog/rest.py
@@ -157,8 +157,10 @@ class RegisterTableRequest(IcebergBaseModel):
 class TokenResponse(IcebergBaseModel):
     access_token: str = Field()
     token_type: str = Field()
-    expires_in: int = Field()
-    issued_token_type: str = Field()
+    expires_in: Optional[int] = Field(default=None)
+    issued_token_type: Optional[str] = Field(default=None)
+    refresh_token: Optional[str] = Field(default=None)
+    scope: Optional[str] = Field(default=None)
 
 
 class ConfigResponse(IcebergBaseModel):
diff --git a/tests/catalog/test_rest.py b/tests/catalog/test_rest.py
index 4eb4680879..20fdbfa4ea 100644
--- a/tests/catalog/test_rest.py
+++ b/tests/catalog/test_rest.py
@@ -109,6 +109,24 @@ def test_token_200(rest_mock: Mocker) -> None:
             "token_type": "Bearer",
             "expires_in": 86400,
             "issued_token_type": "urn:ietf:params:oauth:token-type:access_token",
+            "scope": "openid offline",
+            "refresh_token": "refresh_token",
+        },
+        status_code=200,
+        request_headers=OAUTH_TEST_HEADERS,
+    )
+    assert (
+        RestCatalog("rest", uri=TEST_URI, credential=TEST_CREDENTIALS)._session.headers["Authorization"]  # pylint: disable=W0212
+        == f"Bearer {TEST_TOKEN}"
+    )
+
+
+def test_token_200_without_optional_fields(rest_mock: Mocker) -> None:
+    rest_mock.post(
+        f"{TEST_URI}v1/oauth/tokens",
+        json={
+            "access_token": TEST_TOKEN,
+            "token_type": "Bearer",
         },
         status_code=200,
         request_headers=OAUTH_TEST_HEADERS,