diff --git a/README.rst b/README.rst
index 5b25e69f12..7ced4ec2aa 100644
--- a/README.rst
+++ b/README.rst
@@ -205,4 +205,4 @@ Or with Eventlet's::
 
     $ python green_framework_test.py eventlet
 
-.. _sphinx: http://sphinx.pocoo.org/
+.. _sphinx: https://www.sphinx-doc.org/en/master/
diff --git a/doc/contributors.rst b/doc/contributors.rst
index 4118d55586..c763c424c5 100644
--- a/doc/contributors.rst
+++ b/doc/contributors.rst
@@ -88,3 +88,4 @@ The following is a list of people who have contributed to
 - Terence Honles (terencehonles)
 - Paul Fisher (thetorpedodog)
 - Julius Park (juliusgeo)
+- Khanh Nguyen (KN99HN)
\ No newline at end of file
diff --git a/doc/index.rst b/doc/index.rst
index 9d7ac2b89b..9ef6907181 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -92,7 +92,7 @@ For older versions of the documentation please see the
 About This Documentation
 ------------------------
 This documentation is generated using the `Sphinx
-<http://sphinx.pocoo.org/>`_ documentation generator. The source files
+<https://www.sphinx-doc.org/en/master/>`_ documentation generator. The source files
 for the documentation are located in the *doc/* directory of the
 **PyMongo** distribution. To generate the docs locally run the
 following command from the root directory of the **PyMongo** source: