diff --git a/lib/matrix_api/model/open_id_credentials.dart b/lib/matrix_api/model/open_id_credentials.dart
index 6d9f6f0b..1d2902bd 100644
--- a/lib/matrix_api/model/open_id_credentials.dart
+++ b/lib/matrix_api/model/open_id_credentials.dart
@@ -20,7 +20,7 @@ class OpenIdCredentials {
   String accessToken;
   String tokenType;
   String matrixServerName;
-  int expiresIn;
+  double expiresIn;
 
   OpenIdCredentials.fromJson(Map<String, dynamic> json) {
     accessToken = json['access_token'];
diff --git a/test/fake_matrix_api.dart b/test/fake_matrix_api.dart
index f2b2d54c..4e3eb08c 100644
--- a/test/fake_matrix_api.dart
+++ b/test/fake_matrix_api.dart
@@ -1707,7 +1707,7 @@ class FakeMatrixApi extends MockClient {
             'access_token': 'SomeT0kenHere',
             'token_type': 'Bearer',
             'matrix_server_name': 'example.com',
-            'expires_in': 3600
+            'expires_in': 3600.0
           },
       '/client/r0/user/@test:fakeServer.notExisting/openid/request_token':
           (var req) => {