diff --git a/docs/about/release-notes.md b/docs/about/release-notes.md
index d05d32f2..8d7d3cdb 100644
--- a/docs/about/release-notes.md
+++ b/docs/about/release-notes.md
@@ -47,6 +47,7 @@ authors should review how [search and themes] interact.
### Other Changes and Additions to Development Version
+* Link to GitHub issues from release notes (#644).
* Expand {sha} and {version} in gh-deploy commit message (#1410).
* Compress `sitemap.xml` (#1130).
* Defer loading JS scripts (#1380).
diff --git a/mkdocs.yml b/mkdocs.yml
index 66664b8d..ae1e80ca 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -28,6 +28,9 @@ markdown_extensions:
permalink:
- admonition
- def_list
+ - mdx_gh_links:
+ user: mkdocs
+ repo: mkdocs
copyright: Copyright © 2014 Tom Christie, Maintained by the MkDocs Team.
google_analytics: ['UA-27795084-5', 'mkdocs.org']
diff --git a/requirements/project.txt b/requirements/project.txt
index bc2ab3c5..49b49436 100644
--- a/requirements/project.txt
+++ b/requirements/project.txt
@@ -4,3 +4,4 @@ livereload>=2.5.1
Markdown>=2.5
PyYAML>=3.10
tornado>=4.1
+mdx_gh_links>=0.2
diff --git a/tox.ini b/tox.ini
index 3f0dea32..131de3db 100644
--- a/tox.ini
+++ b/tox.ini
@@ -28,6 +28,7 @@ commands=mdl --style mdl_ruleset.rb README.md CONTRIBUTING.md docs/
basepython = python2.7
passenv=*
deps=
+ mdx_gh_links
requests<=2.9.0
LinkChecker
commands=