diff --git a/CONTRIBUTING.rst b/CONTRIBUTING.rst
index 94d2536..054dfef 100644
--- a/CONTRIBUTING.rst
+++ b/CONTRIBUTING.rst
@@ -1,3 +1,3 @@
 Please refer to `Contributing to Flake8
-<http://flake8.pycqa.org/en/latest/internal/contributing.html>`_
+<https://flake8.pycqa.org/en/latest/internal/contributing.html>`_
 on our website.
diff --git a/README.rst b/README.rst
index ddac952..23102af 100644
--- a/README.rst
+++ b/README.rst
@@ -37,14 +37,14 @@ Quickstart
 ==========
 
 See our `quickstart documentation
-<http://flake8.pycqa.org/en/latest/index.html#quickstart>`_ for how to install
+<https://flake8.pycqa.org/en/latest/index.html#quickstart>`_ for how to install
 and get started with Flake8.
 
 
 Frequently Asked Questions
 ==========================
 
-Flake8 maintains an `FAQ <http://flake8.pycqa.org/en/latest/faq.html>`_ in its
+Flake8 maintains an `FAQ <https://flake8.pycqa.org/en/latest/faq.html>`_ in its
 documentation.
 
 
@@ -61,7 +61,7 @@ to suggest, the mailing list would be the best place for it.
 Links
 =====
 
-* `Flake8 Documentation <http://flake8.pycqa.org/en/latest/>`_
+* `Flake8 Documentation <https://flake8.pycqa.org/en/latest/>`_
 
 * `GitHub Project <https://github.com/pycqa/flake8>`_
 
@@ -72,14 +72,14 @@ Links
   <https://mail.python.org/mailman/listinfo/code-quality>`_
 
 * `Code of Conduct
-  <http://flake8.pycqa.org/en/latest/internal/contributing.html#code-of-conduct>`_
+  <https://flake8.pycqa.org/en/latest/internal/contributing.html#code-of-conduct>`_
 
 * `Getting Started Contributing
-  <http://flake8.pycqa.org/en/latest/internal/contributing.html>`_
+  <https://flake8.pycqa.org/en/latest/internal/contributing.html>`_
 
 
 Maintenance
 ===========
 
 Flake8 was created by Tarek Ziadé and is currently maintained by `Ian Cordasco
-<http://www.coglib.com/~icordasc/>`_
+<https://www.coglib.com/~icordasc/>`_
diff --git a/docs/source/internal/contributing.rst b/docs/source/internal/contributing.rst
index 26cc029..bd33015 100644
--- a/docs/source/internal/contributing.rst
+++ b/docs/source/internal/contributing.rst
@@ -197,7 +197,7 @@ delivered.
 
 .. links
 .. _Python Code Quality Authority's Code of Conduct:
-    http://meta.pycqa.org/en/latest/code-of-conduct.html
+    https://meta.pycqa.org/code-of-conduct.html
 
 .. _tox:
     https://tox.readthedocs.io/
diff --git a/docs/source/release-notes/3.0.0.rst b/docs/source/release-notes/3.0.0.rst
index 2cec53a..28c0b7f 100644
--- a/docs/source/release-notes/3.0.0.rst
+++ b/docs/source/release-notes/3.0.0.rst
@@ -1,7 +1,7 @@
 3.0.0 -- 2016-07-25
 -------------------
 
-- Rewrite our documentation from scratch! (http://flake8.pycqa.org)
+- Rewrite our documentation from scratch! (https://flake8.pycqa.org)
 
 - Drop explicit support for Pythons 2.6, 3.2, and 3.3.
 
diff --git a/docs/source/user/options.rst b/docs/source/user/options.rst
index 8bf7e33..b622bf6 100644
--- a/docs/source/user/options.rst
+++ b/docs/source/user/options.rst
@@ -569,7 +569,7 @@ Options and their Descriptions
         # https://some-super-long-domain-name.com/with/some/very/long/path
 
         url = (
-            'http://...'
+            'https://...'
         )
 
     This defaults to: ``79``
diff --git a/setup.cfg b/setup.cfg
index 9e199c4..acb152a 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -35,9 +35,9 @@ packages = find:
 package_dir =
     =src
 # We document the reasoning for using ranges here:
-# http://flake8.pycqa.org/en/latest/faq.html#why-does-flake8-use-ranges-for-its-dependencies
+# https://flake8.pycqa.org/en/latest/faq.html#why-does-flake8-use-ranges-for-its-dependencies
 # And in which releases we will update those ranges here:
-# http://flake8.pycqa.org/en/latest/internal/releases.html#releasing-flake8
+# https://flake8.pycqa.org/en/latest/internal/releases.html#releasing-flake8
 install_requires =
     mccabe>=0.7.0,<0.8.0
     pycodestyle>=2.8.0,<2.9.0