diff --git a/README b/README
index 8e4697ab..adaa8182 100644
--- a/README
+++ b/README
@@ -18,9 +18,9 @@ It also provides an optional `persistence layer`_ for working with documents as
 Python objects in an ORM-like fashion: defining mappings, retrieving and saving
 documents, wrapping the document data in user-defined classes.
 
-.. _elasticsearch-dsl: http://elasticsearch-dsl.rtfd.org/
-.. _queries: http://elasticsearch-dsl.readthedocs.org/en/latest/search_dsl.html
-.. _persistence layer: http://elasticsearch-dsl.readthedocs.org/en/latest/persistence.html#doctype
+.. _elasticsearch-dsl: https://elasticsearch-dsl.readthedocs.io/
+.. _queries: https://elasticsearch-dsl.readthedocs.io/en/latest/search_dsl.html
+.. _persistence layer: https://elasticsearch-dsl.readthedocs.io/en/latest/persistence.html#doctype
 
 Compatibility
 -------------
@@ -91,7 +91,7 @@ Simple use-case::
 
 `Full documentation`_.
 
-.. _Full documentation: http://elasticsearch-py.rtfd.org/
+.. _Full documentation: https://elasticsearch-py.readthedocs.io/
 
 
 Features
diff --git a/docs/index.rst b/docs/index.rst
index 1f7e5d74..d6722396 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -9,7 +9,7 @@ For a more high level client library with more limited scope, have a look at
 `elasticsearch-dsl`_ - it is a more pythonic library sitting on top of
 ``elasticsearch-py``.
 
-.. _elasticsearch-dsl: http://elasticsearch-dsl.rtfd.org/
+.. _elasticsearch-dsl: https://elasticsearch-dsl.readthedocs.io/
 
 Compatibility
 -------------
@@ -78,7 +78,7 @@ Python. We have created some :ref:`helpers` to help with this issue as well as
 a more high level library (`elasticsearch-dsl`_) on top of this one to provide
 a more convenient way of working with Elasticsearch.
 
-.. _elasticsearch-dsl: http://elasticsearch-dsl.rtfd.org/
+.. _elasticsearch-dsl: https://elasticsearch-dsl.readthedocs.io/
 
 Persistent Connections
 ~~~~~~~~~~~~~~~~~~~~~~
diff --git a/elasticsearch/connection/http_urllib3.py b/elasticsearch/connection/http_urllib3.py
index eb59051f..1e9d4816 100644
--- a/elasticsearch/connection/http_urllib3.py
+++ b/elasticsearch/connection/http_urllib3.py
@@ -20,7 +20,7 @@ class Urllib3HttpConnection(Connection):
     :arg use_ssl: use ssl for the connection if `True`
     :arg verify_certs: whether to verify SSL certificates
     :arg ca_certs: optional path to CA bundle. See
-        http://urllib3.readthedocs.org/en/latest/security.html#using-certifi-with-urllib3
+        https://urllib3.readthedocs.io/en/latest/security.html#using-certifi-with-urllib3
         for instructions how to get default set
     :arg client_cert: path to the file containing the private key and the
         certificate, or cert only if using client_key