diff --git a/nfv/nfv-client/nfv_client/openstack/openstack.py b/nfv/nfv-client/nfv_client/openstack/openstack.py
index bb22ead4..7e8606cc 100755
--- a/nfv/nfv-client/nfv_client/openstack/openstack.py
+++ b/nfv/nfv-client/nfv_client/openstack/openstack.py
@@ -1,9 +1,10 @@
 #
-# Copyright (c) 2016-2022 Wind River Systems, Inc.
+# Copyright (c) 2016-2023 Wind River Systems, Inc.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 import json
+import os
 from six.moves import urllib
 
 from nfv_client.openstack.objects import Token
@@ -25,6 +26,7 @@ class OpenStackServiceTypes(object):
 
 SERVICE = OpenStackServices()
 SERVICE_TYPE = OpenStackServiceTypes()
+CAFILE = os.environ.get('REQUESTS_CA_BUNDLE')
 
 
 def get_token(auth_uri, project_name, project_domain_name, username, password,
@@ -34,7 +36,7 @@ def get_token(auth_uri, project_name, project_domain_name, username, password,
     """
     try:
         # handle auth_uri re-direct (300)
-        urllib.request.urlopen(auth_uri)
+        urllib.request.urlopen(auth_uri, cafile=CAFILE)
     except urllib.error.HTTPError as e:
         if e.code == 300:
             auth_uri = e.headers['location']
@@ -70,7 +72,7 @@ def get_token(auth_uri, project_name, project_domain_name, username, password,
 
         request_info.data = payload.encode()
 
-        request = urllib.request.urlopen(request_info, timeout=30)
+        request = urllib.request.urlopen(request_info, timeout=30, cafile=CAFILE)
         # Identity API v3 returns token id in X-Subject-Token
         # response header.
         token_id = request.headers.get('X-Subject-Token')
diff --git a/nfv/nfv-client/nfv_client/openstack/rest_api.py b/nfv/nfv-client/nfv_client/openstack/rest_api.py
index df373adb..1c461bb2 100755
--- a/nfv/nfv-client/nfv_client/openstack/rest_api.py
+++ b/nfv/nfv-client/nfv_client/openstack/rest_api.py
@@ -1,12 +1,15 @@
 #
-# Copyright (c) 2016-2022 Wind River Systems, Inc.
+# Copyright (c) 2016-2023 Wind River Systems, Inc.
 #
 # SPDX-License-Identifier: Apache-2.0
 #
 import json
+import os
 from six.moves import http_client as httplib
 from six.moves import urllib
 
+CAFILE = os.environ.get('REQUESTS_CA_BUNDLE')
+
 
 def request(token_id, method, api_cmd, api_cmd_headers=None,
             api_cmd_payload=None, timeout_in_secs=40):
@@ -35,7 +38,8 @@ def request(token_id, method, api_cmd, api_cmd_headers=None,
             request_info.data = api_cmd_payload.encode()
 
         url_request = urllib.request.urlopen(request_info,
-                                             timeout=timeout_in_secs)
+                                             timeout=timeout_in_secs,
+                                             cafile=CAFILE)
 
         headers = list()  # list of tuples
         for key, value in url_request.info().items():