diff --git a/notification/notifier/slack.py b/notification/notifier/slack.py
index 31c103e..26f1d06 100644
--- a/notification/notifier/slack.py
+++ b/notification/notifier/slack.py
@@ -6,7 +6,7 @@ def __init__(self, config):
         self.__config = config
     
     def notify(self, notification):
-        slack = Slacker(self.__config['apikey'])
+        slack = Slacker(self.__config['apikey'], http_proxy=self.__config['slack_http_proxy'], https_proxy=self.__config['slack_https_proxy'])
         response = slack.chat.post_message(notification.user_to_notify.profile.slack_room_name, notification.message,
                                            username="Openduty", icon_url="https://slack.global.ssl.fastly.net/1937/img/services/pagerduty_48.png")
         if not response.error:
diff --git a/requirements.txt b/requirements.txt
index bd6dbfa..845a65c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,8 @@ Django==1.8.11
 argparse==1.4.0
 arrow==0.7
 celery==3.1.23
+certifi==2017.4.17
+chardet==3.0.4
 dj-database-url==0.4.0
 django-annoying==0.8.2
 django-auth-ldap==1.2.6
@@ -18,6 +20,7 @@ future==0.14.3
 gunicorn==19.3.0
 httplib2==0.9.1
 icalendar==3.9.0
+idna==2.5
 kombu~=3.0
 mercurial==3.4.1
 oauth2client==1.4.11
@@ -26,13 +29,14 @@ pyasn1-modules==0.0.5
 python-dateutil==2.4.2
 python-ldap==2.4.19
 pytz
-requests[security]
+requests==2.17.3
 mysql-python==1.2.5
 rsa
 six==1.9.0
-slacker==0.6.2
+slacker==0.9.50
 sleekxmpp==1.3.1
 twilio==4.4.0
+urllib3==1.21.1
 vobject
 wsgiref==0.1.2
 django-twilio