diff --git a/rtcclient/base.py b/rtcclient/base.py
index 04ed1cf..aa41442 100644
--- a/rtcclient/base.py
+++ b/rtcclient/base.py
@@ -56,6 +56,7 @@ def get(self,
             url,
             verify=False,
             headers=None,
+            cookies=None,
             proxies=None,
             timeout=60,
             **kwargs):
@@ -66,6 +67,8 @@ def get(self,
             A CA_BUNDLE path can also be provided.
         :param headers: (optional) Dictionary of HTTP Headers to send with
             the :class:`Request`.
+        :param cookies: (optional) Dict or CookieJar object to send with
+            the :class:`Request`.
         :param proxies: (optional) Dictionary mapping protocol to the URL of
             the proxy.
         :param timeout: (optional) How long to wait for the server to send data
@@ -81,6 +84,7 @@ def get(self,
         response = requests.get(url,
                                 verify=verify,
                                 headers=headers,
+                                cookies=cookies,
                                 proxies=proxies,
                                 timeout=timeout,
                                 **kwargs)
@@ -97,6 +101,7 @@ def post(self,
              json=None,
              verify=False,
              headers=None,
+             cookies=None,
              proxies=None,
              timeout=60,
              **kwargs):
@@ -111,6 +116,8 @@ def post(self,
             A CA_BUNDLE path can also be provided.
         :param headers: (optional) Dictionary of HTTP Headers to send with
             the :class:`Request`.
+        :param cookies: (optional) Dict or CookieJar object to send with
+            the :class:`Request`.
         :param proxies: (optional) Dictionary mapping protocol to the URL of
             the proxy.
         :param timeout: (optional) How long to wait for the server to send data
@@ -129,6 +136,7 @@ def post(self,
                                  json=json,
                                  verify=verify,
                                  headers=headers,
+                                 cookies=cookies,
                                  proxies=proxies,
                                  timeout=timeout,
                                  **kwargs)
@@ -146,6 +154,7 @@ def put(self,
             data=None,
             verify=False,
             headers=None,
+            cookies=None,
             proxies=None,
             timeout=60,
             **kwargs):
@@ -158,6 +167,8 @@ def put(self,
             A CA_BUNDLE path can also be provided.
         :param headers: (optional) Dictionary of HTTP Headers to send with
             the :class:`Request`.
+        :param cookies: (optional) Dict or CookieJar object to send with
+            the :class:`Request`.
         :param proxies: (optional) Dictionary mapping protocol to the URL of
             the proxy.
         :param timeout: (optional) How long to wait for the server to send data
@@ -174,6 +185,7 @@ def put(self,
                                 data=data,
                                 verify=verify,
                                 headers=headers,
+                                cookies=cookies,
                                 proxies=proxies,
                                 timeout=timeout,
                                 **kwargs)
@@ -187,6 +199,7 @@ def put(self,
     def delete(self,
                url,
                headers=None,
+               cookies=None,
                verify=False,
                proxies=None,
                timeout=60,
@@ -196,6 +209,8 @@ def delete(self,
         :param url: URL for the new :class:`Request` object.
         :param headers: (optional) Dictionary of HTTP Headers to send with
             the :class:`Request`.
+        :param cookies: (optional) Dict or CookieJar object to send with
+            the :class:`Request`.
         :param verify: (optional) if ``True``, the SSL cert will be verified.
             A CA_BUNDLE path can also be provided.
         :param proxies: (optional) Dictionary mapping protocol to the URL of
@@ -212,6 +227,7 @@ def delete(self,
         self.log.debug("Delete a request to %s", url)
         response = requests.delete(url,
                                    headers=headers,
+                                   cookies=cookies,
                                    verify=verify,
                                    proxies=proxies,
                                    timeout=timeout,
@@ -270,6 +286,7 @@ def _initialize(self):
             verify=False,
             proxies=self.rtc_obj.proxies,
             headers=self.rtc_obj.headers,
+            cookies=self.rtc_obj.cookies,
         )
         self.__initialize(resp)
         self.log.info("Finish the initialization for <%s %s>",
@@ -344,6 +361,7 @@ def __get_rdf_resource_title(self, rdf_url):
             verify=False,
             proxies=self.rtc_obj.proxies,
             headers=self.rtc_obj.headers,
+            cookies=self.rtc_obj.cookies,
         )
         raw_data = xmltodict.parse(resp.content)
 
diff --git a/rtcclient/client.py b/rtcclient/client.py
index ac2ed38..507f243 100644
--- a/rtcclient/client.py
+++ b/rtcclient/client.py
@@ -71,6 +71,7 @@ def __init__(self,
 
         self.jazz = ends_with_jazz
         self.headers = self._get_headers()
+        self.cookies = self._get_cookies()
         self.searchpath = searchpath
         self.templater = Templater(self, searchpath=self.searchpath)
         self.query = Query(self)
@@ -82,16 +83,20 @@ def get_rtc_obj(self):
         return self
 
     def _get_headers(self):
+        _headers = {}
+        _headers["Content-Type"] = self.CONTENT_XML
+        _headers["Accept"] = self.CONTENT_XML
+        return _headers
+
+    def _get_cookies(self):
         if self.jazz is True:
             _allow_redirects = True
         else:
             _allow_redirects = False
 
-        _headers = {"Content-Type": self.CONTENT_XML}
         resp = self.get(self.url + "/authenticated/identity",
                         auth=(self.username, self.password),
                         verify=False,
-                        headers=_headers,
                         proxies=self.proxies,
                         allow_redirects=_allow_redirects)
 
@@ -107,23 +112,25 @@ def _get_headers(self):
             raise exception.RTCException("Authentication Failed: "
                                          "Invalid username or password")
 
+        _cookies = None
+
         # fix issue #68
         if not _allow_redirects:
-            if resp.headers.get("set-cookie") is not None:
-                _headers["Cookie"] = resp.headers.get("set-cookie")
+            _cookies = resp.cookies
 
         resp = self.get(self.url + "/authenticated/identity",
                         auth=(self.username, self.password),
                         verify=False,
-                        headers=_headers,
+                        cookies=_cookies,
                         proxies=self.proxies,
                         allow_redirects=_allow_redirects)
 
         # fix issue #68
         if not _allow_redirects:
-            _headers["Cookie"] += "; " + resp.headers.get("set-cookie")
+            for cookie in resp.cookies:
+                _cookies.set_cookie(cookie)
         else:
-            _headers["Cookie"] = resp.headers.get("set-cookie")
+            _cookies = resp.cookies
 
         # For Form Challenge
         auth_msg = resp.headers.get("X-com-ibm-team-repository-web-auth-msg")
@@ -137,6 +144,7 @@ def _get_headers(self):
                              data=post_data,
                              verify=False,
                              headers=temp_headers,
+                             cookies=_cookies,
                              proxies=self.proxies,
                              allow_redirects=True)
 
@@ -157,12 +165,12 @@ def _get_headers(self):
                                                  "Invalid username or password")
 
         if not _allow_redirects:
-            _headers["Cookie"] += "; " + resp.headers.get("set-cookie")
+            for cookie in resp.cookies:
+                _cookies.set_cookie(cookie)
         else:
-            _headers["Cookie"] = resp.headers.get("set-cookie")
+            _cookies = resp.cookies
 
-        _headers["Accept"] = self.CONTENT_XML
-        return _headers
+        return _cookies
 
     def relogin(self):
         """Relogin the RTC Server/Jazz when the token expires
@@ -172,6 +180,7 @@ def relogin(self):
         self.log.info("Cookie expires. Relogin to get a new cookie.")
         self.headers = None
         self.headers = self._get_headers()
+        self.cookies = self._get_cookies()
         self.log.debug("Successfully relogin.")
 
     def getProjectAreas(self, archived=False, returned_properties=None):
@@ -988,7 +997,8 @@ def getWorkitem(self, workitem_id, returned_properties=None):
             resp = self.get(req_url,
                             verify=False,
                             proxies=self.proxies,
-                            headers=self.headers)
+                            headers=self.headers,
+                            cookies=self.cookies)
             raw_data = xmltodict.parse(resp.content)
             workitem_raw = raw_data["oslc_cm:ChangeRequest"]
 
@@ -1213,6 +1223,7 @@ def _createWorkitem(self, url_post, workitem_raw):
         resp = self.post(url_post,
                          verify=False,
                          headers=headers,
+                         cookies=self.cookies,
                          proxies=self.proxies,
                          data=workitem_raw)
 
@@ -1456,7 +1467,8 @@ def _get_paged_resources(self,
         resp = self.get(resource_url,
                         verify=False,
                         proxies=self.proxies,
-                        headers=self.headers)
+                        headers=self.headers,
+                        cookies=self.cookies)
         raw_data = xmltodict.parse(resp.content)
 
         try:
@@ -1504,7 +1516,8 @@ def _get_paged_resources(self,
                 resp = self.get(url_next,
                                 verify=False,
                                 proxies=self.proxies,
-                                headers=self.headers)
+                                headers=self.headers,
+                                cookies=self.cookies)
                 raw_data = xmltodict.parse(resp.content)
             else:
                 break
diff --git a/rtcclient/models.py b/rtcclient/models.py
index 9de030c..7b1c14b 100644
--- a/rtcclient/models.py
+++ b/rtcclient/models.py
@@ -191,7 +191,8 @@ def getChanges(self):
         resp = self.get(resource_url,
                         verify=False,
                         proxies=self.rtc_obj.proxies,
-                        headers=self.rtc_obj.headers)
+                        headers=self.rtc_obj.headers,
+                        cookies=self.rtc_obj.cookies)
         raw_data = xmltodict.parse(resp.content).get("scm:ChangeSet")
         common_changes = dict()
         changes = raw_data.get("changes")
@@ -291,7 +292,10 @@ def _fetchFile(self, state_id, file_folder, override=True):
 
         self.log.debug("Start fetching file from %s ..." % file_url)
 
-        resp = self.get(file_url, verify=False, headers=self.rtc_obj.headers)
+        resp = self.get(file_url,
+                        verify=False,
+                        headers=self.rtc_obj.headers,
+                        cookies=self.rtc_obj.cookies)
         file_name = re.findall(r".+filename\*=UTF-8''(.+)",
                                resp.headers["content-disposition"])[0]
         file_path = os.path.join(file_folder, file_name)
diff --git a/rtcclient/project_area.py b/rtcclient/project_area.py
index d5be145..f5f7902 100644
--- a/rtcclient/project_area.py
+++ b/rtcclient/project_area.py
@@ -54,7 +54,8 @@ def getRoles(self):
         resp = self.get(roles_url,
                         verify=False,
                         proxies=self.rtc_obj.proxies,
-                        headers=self.rtc_obj.headers)
+                        headers=self.rtc_obj.headers,
+                        cookies=self.rtc_obj.cookies)
 
         roles_list = list()
         raw_data = xmltodict.parse(resp.content)
diff --git a/rtcclient/template.py b/rtcclient/template.py
index 8e09ccf..c634cb9 100644
--- a/rtcclient/template.py
+++ b/rtcclient/template.py
@@ -278,7 +278,8 @@ def getTemplate(self,
         resp = self.get(workitem_url,
                         verify=False,
                         proxies=self.rtc_obj.proxies,
-                        headers=self.rtc_obj.headers)
+                        headers=self.rtc_obj.headers,
+                        cookies=self.rtc_obj.cookies)
         raw_data = xmltodict.parse(resp.content)
 
         # pre-adjust the template:
diff --git a/rtcclient/utils.py b/rtcclient/utils.py
index 1b9ffb8..8ccd377 100644
--- a/rtcclient/utils.py
+++ b/rtcclient/utils.py
@@ -21,7 +21,7 @@ def token_expire_handler(func):
     def wrapper(*args, **kwargs):
         rtc_obj = args[0].get_rtc_obj()
 
-        if not hasattr(rtc_obj, "headers") or rtc_obj.headers is None:
+        if not hasattr(rtc_obj, "cookies") or rtc_obj.cookies is None:
             # still in the initialization or relogin
             # directly call the method
             return func(*args, **kwargs)
@@ -39,7 +39,7 @@ def wrapper(*args, **kwargs):
                     except RTCException:
                         raise RTCException("Relogin Failed: "
                                            "Invalid username or password")
-                    kwargs["headers"]["Cookie"] = rtc_obj.headers["Cookie"]
+                    kwargs["cookies"] = rtc_obj.cookies
                     return func(*args, **kwargs)
                 else:
                     # not expires
diff --git a/rtcclient/workitem.py b/rtcclient/workitem.py
index 236fe03..8e30aa6 100644
--- a/rtcclient/workitem.py
+++ b/rtcclient/workitem.py
@@ -105,7 +105,8 @@ def addComment(self, msg=None):
         resp = self.get(comments_url,
                         verify=False,
                         proxies=self.rtc_obj.proxies,
-                        headers=headers)
+                        headers=headers,
+                        cookies=self.rtc_obj.cookies)
 
         raw_data = xmltodict.parse(resp.content)
 
@@ -123,6 +124,7 @@ def addComment(self, msg=None):
         resp = self.post(req_url,
                          verify=False,
                          headers=headers,
+                         cookies=self.rtc_obj.cookies,
                          proxies=self.rtc_obj.proxies,
                          data=comment_msg)
         self.log.info("Successfully add comment: [%s] for <Workitem %s>", msg,
@@ -236,6 +238,7 @@ def _update_subscribe(self, headers, raw_data):
                  verify=False,
                  proxies=self.rtc_obj.proxies,
                  headers=headers,
+                 cookies=self.rtc_obj.cookies,
                  data=xmltodict.unparse(raw_data))
 
     def _perform_subscribe(self):
@@ -248,7 +251,8 @@ def _perform_subscribe(self):
         resp = self.get(subscribers_url,
                         verify=False,
                         proxies=self.rtc_obj.proxies,
-                        headers=headers)
+                        headers=headers,
+                        cookies=self.rtc_obj.cookies)
         headers["If-Match"] = resp.headers.get("etag")
         raw_data = xmltodict.parse(resp.content)
         return headers, raw_data
@@ -544,6 +548,7 @@ def addParent(self, parent_id):
                  verify=False,
                  proxies=self.rtc_obj.proxies,
                  headers=headers,
+                 cookies=self.rtc_obj.cookies,
                  data=json.dumps(parent_original))
         self.log.info(
             "Successfully add a parent <Workitem %s> to current "
@@ -617,6 +622,7 @@ def _addChildren(self, child_ids):
         self.put(req_url,
                  verify=False,
                  headers=headers,
+                 cookies=self.rtc_obj.cookies,
                  proxies=self.rtc_obj.proxies,
                  data=json.dumps(children_original))
 
@@ -670,6 +676,7 @@ def removeParent(self):
                  verify=False,
                  proxies=self.rtc_obj.proxies,
                  headers=headers,
+                 cookies=self.rtc_obj.cookies,
                  data=json.dumps(parent_original))
         self.log.info(
             "Successfully remove the parent workitem of current "
@@ -738,6 +745,7 @@ def _removeChildren(self, child_ids):
         self.put(req_url,
                  verify=False,
                  headers=headers,
+                 cookies=self.rtc_obj.cookies,
                  proxies=self.rtc_obj.proxies,
                  data=json.dumps(children_original))
 
@@ -771,6 +779,7 @@ def addAttachment(self, filepath):
         resp = self.post(req_url,
                          verify=False,
                          headers=headers,
+                         cookies=self.rtc_obj.cookies,
                          proxies=self.rtc_obj.proxies,
                          params=params,
                          files=files)
@@ -794,6 +803,7 @@ def _add_attachment_link(self, attachment_info):
                          payload,
                          verify=False,
                          headers=self.rtc_obj.headers,
+                         cookies=self.rtc_obj.cookies,
                          proxies=self.rtc_obj.proxies)
         raw_data = xmltodict.parse(resp.content)
 
diff --git a/tests/conftest.py b/tests/conftest.py
index da2980f..c763210 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -8,10 +8,10 @@
 def rtcclient(mocker):
     mock_resp = mocker.MagicMock(spec=requests.Response)
     mock_resp.status_code = 200
-    mock_resp.headers = {"set-cookie": "cookie-id"}
+    mock_resp.cookies = {"set-cookie": "cookie-id"}
 
-    mocked_headers = mocker.patch("rtcclient.client.RTCClient._get_headers")
-    mocked_headers.return_value = mock_resp
+    mocked_cookies = mocker.patch("rtcclient.client.RTCClient._get_cookies")
+    mocked_cookies.return_value = mock_resp
 
     return RTCClient(url="http://test.url:9443/jazz",
                      username="tester1@email.com",
diff --git a/tests/test_base.py b/tests/test_base.py
index c8d34fe..54eb185 100644
--- a/tests/test_base.py
+++ b/tests/test_base.py
@@ -66,11 +66,13 @@ def test_get_resp(self, mocker):
         resp = test_rtc.get(test_rtc.url,
                             verify=False,
                             headers=test_rtc.CONTENT_XML,
+                            cookies=None,
                             proxies=None,
                             timeout=30)
         mocked_get.assert_called_once_with(test_rtc.url,
                                            verify=False,
                                            headers=test_rtc.CONTENT_XML,
+                                           cookies=None,
                                            proxies=None,
                                            timeout=30)
         assert resp == mock_resp
@@ -94,6 +96,7 @@ def test_post_resp(self, mocker):
                              verify=False,
                              proxies=None,
                              headers=test_rtc.CONTENT_XML,
+                             cookies=None,
                              timeout=30)
         mocked_post.assert_called_once_with(test_rtc.url,
                                             data=post_data,
@@ -101,6 +104,7 @@ def test_post_resp(self, mocker):
                                             verify=False,
                                             proxies=None,
                                             headers=test_rtc.CONTENT_XML,
+                                            cookies=None,
                                             timeout=30)
         assert resp == mock_resp
 
@@ -123,6 +127,7 @@ def test_put_resp(self, mocker):
                             verify=False,
                             proxies=None,
                             headers=test_rtc.CONTENT_XML,
+                            cookies=None,
                             timeout=30)
         mocked_put.assert_called_once_with(test_rtc.url,
                                            data=post_data,
@@ -130,5 +135,6 @@ def test_put_resp(self, mocker):
                                            verify=False,
                                            proxies=None,
                                            headers=test_rtc.CONTENT_XML,
+                                           cookies=None,
                                            timeout=30)
         assert resp == mock_resp
diff --git a/tests/test_client.py b/tests/test_client.py
index ad6309f..e0f797f 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -19,27 +19,23 @@ def test_headers(mocker):
     mocked_get.return_value = mock_rsp
     mocked_post.return_value = mock_rsp
 
-    expected_headers = {
-        "Content-Type": "text/xml",
-        "Cookie": "cookie-id",
-        "Accept": "text/xml"
-    }
+    expected_headers = {"Content-Type": "text/xml", "Accept": "text/xml"}
+    expected_cookies = {"set-cookie": "cookie-id"}
 
     # auth failed
-    mock_rsp.headers = {
-        "set-cookie": "cookie-id",
-        "x-com-ibm-team-repository-web-auth-msg": "authfailed"
-    }
+    mock_rsp.headers = {"x-com-ibm-team-repository-web-auth-msg": "authfailed"}
     with pytest.raises(RTCException):
         RTCClient(url="http://test.url:9443/jazz",
                   username="user",
                   password="password")
 
-    mock_rsp.headers = {"set-cookie": "cookie-id"}
+    mock_rsp.headers = {}
+    mock_rsp.cookies = {"set-cookie": "cookie-id"}
     client = RTCClient(url="http://test.url:9443/jazz",
                        username="user",
                        password="password")
     assert client.headers == expected_headers
+    assert client.cookies == expected_cookies
 
 
 class TestRTCClient: