diff --git a/moto/cognitoidentity/models.py b/moto/cognitoidentity/models.py
index 21cd4f949..daa2a4641 100644
--- a/moto/cognitoidentity/models.py
+++ b/moto/cognitoidentity/models.py
@@ -88,21 +88,12 @@ class CognitoIdentityBackend(BaseBackend):
         return response
 
     def get_open_id_token_for_developer_identity(self, identity_id):
-        duration = 90
-        now = datetime.datetime.utcnow()
-        expiration = now + datetime.timedelta(seconds=duration)
-        expiration_str = str(iso_8601_datetime_with_milliseconds(expiration))
-        return json.dumps(
+        response = json.dumps(
             {
-                "Credentials":
-                {
-                    "AccessKeyId": "TESTACCESSKEY12345",
-                    "Expiration": expiration_str,
-                    "SecretKey": "ABCSECRETKEY",
-                    "SessionToken": "ABC12345"
-                },
-                "IdentityId": identity_id
+                "IdentityId": identity_id,
+                "Token": get_random_identity_id(self.region)
             })
+        return response
 
 
 cognitoidentity_backends = {}
diff --git a/tests/test_cognitoidentity/test_cognitoidentity.py b/tests/test_cognitoidentity/test_cognitoidentity.py
index 2b54709a1..c4f51ee4c 100644
--- a/tests/test_cognitoidentity/test_cognitoidentity.py
+++ b/tests/test_cognitoidentity/test_cognitoidentity.py
@@ -51,6 +51,7 @@ def test_get_credentials_for_identity():
     conn = boto3.client('cognito-identity', 'us-west-2')
     result = conn.get_credentials_for_identity(IdentityId='12345')
 
+    assert result.get('Expiration') > 0 or result.get('ResponseMetadata').get('HTTPStatusCode') == 200
     assert result.get('IdentityId') == '12345' or result.get('ResponseMetadata').get('HTTPStatusCode') == 200
 
 
@@ -65,4 +66,5 @@ def test_get_open_id_token_for_developer_identity():
         },
         TokenDuration=123
     )
+    assert len(result['Token'])
     assert result['IdentityId'] == '12345'