diff --git a/README.md b/README.md
index 8ec1020..d293956 100644
--- a/README.md
+++ b/README.md
@@ -20,10 +20,10 @@ $ sudo python setup.py install
 
 Get a token of slack webhook on [slack page](https://my.slack.com/services/new/incoming-webhook/).
 
-Instantiate:
+Instantiate, with optional proxy:
 <pre>
 > import slackweb
-> slack = slackweb.Slack(url="https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX")
+> slack = slackweb.Slack(url="https://hooks.slack.com/services/T00000000/B00000000/XXXXXXXXXXXXXXXXXXXXXXXX", proxy="https://proxy.URI")
 </pre>
 
 In case that you want to send a simple message:
diff --git a/setup.py b/setup.py
index dc93b8b..a875e9b 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
       "License :: OSI Approved :: MIT License"
     ]
 )
-setup_options["version"] = "1.0.5"
+setup_options["version"] = "1.1.0"
 setup_options.update(dict(
   packages         = ['slackweb'],
 ))
diff --git a/slackweb/slackweb.py b/slackweb/slackweb.py
index 4cdb35b..f28a193 100644
--- a/slackweb/slackweb.py
+++ b/slackweb/slackweb.py
@@ -15,9 +15,13 @@
 
 class Slack():
 
-    def __init__(self, url=""):
+    def __init__(self, url="", proxy=None):
         self.url = url
-        self.opener = urlrequest.build_opener(urlrequest.HTTPHandler())
+        if proxy:
+                proxy = {'https': proxy}
+                self.opener = urlrequest.build_opener(urlrequest.HTTPHandler(), urlrequest.ProxyHandler(proxy))
+        else:
+                self.opener = urlrequest.build_opener(urlrequest.HTTPHandler())
 
     def notify(self, **kwargs):
         """