Add list of old versions
diff --git a/mkdocs/docs/index.md b/mkdocs/docs/index.md
index 3f70444..6c79f1f 100644
--- a/mkdocs/docs/index.md
+++ b/mkdocs/docs/index.md
@@ -78,3 +78,13 @@
     git@gitlab.eclipse.org:eclipse/hawk/hawk.git
 
 You can also read the code through your browser from the [Eclipse Gitlab instance](https://gitlab.eclipse.org/eclipse/hawk/hawk/-/tree/master) (which allows for archive downloads).
+
+## Older versions
+
+Downloads for older versions are archived at Eclipse.org:
+
+<ul>
+{% for version in older %}
+<li><a href="http://download.eclipse.org/hawk/{{ version }}/">{{ version }}</a></li>
+{% endfor %}
+</ul>
diff --git a/mkdocs/mkdocs.yml b/mkdocs/mkdocs.yml
index 0bd5797..740f958 100644
--- a/mkdocs/mkdocs.yml
+++ b/mkdocs/mkdocs.yml
@@ -2,11 +2,14 @@
 plugins:
   - markdownextradata
   - search
+  - macros
 extra:
+  older:
+    - 2.0.0
   stable:
-    version: 2.0.0
-  interim:
     version: 2.1.0
+  interim:
+    version: 2.2.0
 nav:
   - Home: index.md
   - Basic use:
diff --git a/mkdocs/requirements.txt b/mkdocs/requirements.txt
index 1ec9e57..8e58e68 100644
--- a/mkdocs/requirements.txt
+++ b/mkdocs/requirements.txt
@@ -2,4 +2,5 @@
 mkdocs-material==4.4.2
 mkdocs-minify-plugin==0.2.1
 mkdocs-markdownextradata-plugin==0.1.5
+mkdocs-macros-plugin
 pygments==2.4.2