diff --git a/docs/source/changelog.rst b/docs/source/changelog.rst
index 48e1ce8e93..2a21b024dd 100644
--- a/docs/source/changelog.rst
+++ b/docs/source/changelog.rst
@@ -145,7 +145,7 @@ There is a new cell toolbar for adding *cell tags* (:ghpull:`2048`):
 
 Cell tags are a lightweight way to customise the behaviour of tools working with
 notebooks; we're working on building support for them into tools like `nbconvert
-<http://nbconvert.readthedocs.io/en/latest/>`__ and `nbval
+<https://nbconvert.readthedocs.io/en/latest/>`__ and `nbval
 <https://github.com/computationalmodelling/nbval>`__. To start using tags,
 select ``Tags`` in the ``View > Cell Toolbar`` menu in a notebook.
 
@@ -226,7 +226,7 @@ Other additions
   extensions(:ghpull:`2108`).
 
 - The notebook server now supports the `bundler API
-  <http://jupyter-notebook.readthedocs.io/en/latest/extending/bundler_extensions.html>`__
+  <https://jupyter-notebook.readthedocs.io/en/latest/extending/bundler_extensions.html>`__
   from the `jupyter_cms incubator project
   <https://github.com/jupyter-incubator/contentmanagement>`__ (:ghpull:`1579`).
 
diff --git a/docs/source/links.txt b/docs/source/links.txt
index 710ef8c1da..0306b047fb 100644
--- a/docs/source/links.txt
+++ b/docs/source/links.txt
@@ -25,8 +25,8 @@
 .. _notebook_p1: https://nbviewer.jupyter.org/github/jupyter/notebook/blob/master/docs/source/examples/Notebook/Running%20Code.ipynb
 
 .. Other python projects
-.. _matplotlib: http://matplotlib.org
-.. _nbviewer: http://nbviewer.jupyter.org
+.. _matplotlib: https://matplotlib.org
+.. _nbviewer: https://nbviewer.jupyter.org
 .. _nbconvert: https://nbconvert.readthedocs.io/en/latest/
 
 .. Other tools and projects
diff --git a/docs/source/notebook.rst b/docs/source/notebook.rst
index e60ff82003..4ddef27d73 100644
--- a/docs/source/notebook.rst
+++ b/docs/source/notebook.rst
@@ -219,7 +219,7 @@ drop-down on the toolbar (which will be "Code", initially), or via
 
 For more information on the different things you can do in a notebook,
 see the `collection of examples
-<http://nbviewer.jupyter.org/github/jupyter/notebook/tree/master/docs/source/examples/Notebook/>`_.
+<https://nbviewer.jupyter.org/github/jupyter/notebook/tree/master/docs/source/examples/Notebook/>`_.
 
 Code cells
 ~~~~~~~~~~
@@ -266,7 +266,7 @@ the LaTeX portions are automatically rendered in the HTML output as equations
 with high quality typography. This is made possible by MathJax_, which
 supports a `large subset <mathjax_tex>`_ of LaTeX functionality
 
-.. _mathjax_tex: http://docs.mathjax.org/en/latest/tex.html
+.. _mathjax_tex: https://docs.mathjax.org/en/latest/tex.html
 
 Standard mathematics environments defined by LaTeX and AMS-LaTeX (the
 `amsmath` package) also work, such as
@@ -373,7 +373,7 @@ Installing kernels
 ------------------
 
 For information on how to install a Python kernel, refer to the
-`IPython install page <http://ipython.org/install.html>`__.
+`IPython install page <https://ipython.org/install.html>`__.
 
 Kernels for other languages can be found in the `IPython wiki
 <https://github.com/ipython/ipython/wiki/IPython%20kernels%20for%20other%20languages>`_.
diff --git a/docs/source/template.tpl b/docs/source/template.tpl
index af2561b16b..411ef7c68d 100644
--- a/docs/source/template.tpl
+++ b/docs/source/template.tpl
@@ -2,7 +2,7 @@
 
 {% macro notebooklink() -%}
 
-`View the original notebook on nbviewer <http://nbviewer.jupyter.org/github/jupyter/notebook/blob/master/docs/{{ resources['metadata']['path'] }}/{{ resources['metadata']['name'] | replace(' ', '%20') }}.ipynb>`__
+`View the original notebook on nbviewer <https://nbviewer.jupyter.org/github/jupyter/notebook/blob/master/docs/{{ resources['metadata']['path'] }}/{{ resources['metadata']['name'] | replace(' ', '%20') }}.ipynb>`__
 
 
 {%- endmacro %}
diff --git a/notebook/nbextensions.py b/notebook/nbextensions.py
index afd0b163a0..1e35876033 100644
--- a/notebook/nbextensions.py
+++ b/notebook/nbextensions.py
@@ -1018,7 +1018,7 @@ def _should_copy(src, dest, logger=None):
         return True
     if os.stat(src).st_mtime - os.stat(dest).st_mtime > 1e-6:
         # we add a fudge factor to work around a bug in python 2.x
-        # that was fixed in python 3.x: http://bugs.python.org/issue12904
+        # that was fixed in python 3.x: https://bugs.python.org/issue12904
         if logger:
             logger.warn("Out of date: %s" % dest)
         return True
diff --git a/notebook/notebookapp.py b/notebook/notebookapp.py
index f45ecd69dc..4baf4f256a 100755
--- a/notebook/notebookapp.py
+++ b/notebook/notebookapp.py
@@ -1579,7 +1579,7 @@ def start(self):
             info(_("Welcome to Project Jupyter! Explore the various tools available"
                  " and their corresponding documentation. If you are interested"
                  " in contributing to the platform, please visit the community"
-                 "resources section at http://jupyter.org/community.html."))
+                 "resources section at https://jupyter.org/community.html."))
 
         self.write_server_info_file()