diff --git a/_config.yml b/_config.yml
index af57588..60ef703 100755
--- a/_config.yml
+++ b/_config.yml
@@ -105,3 +105,15 @@ sphinx:
   extra_extensions          :   # A list of extra extensions to load by Sphinx.
   local_extensions          :   # A list of local extensions to load by sphinx specified by "name: path" items
   recursive_update          : true # A boolean indicating whether to overwrite the Sphinx config (true) or recursively update (false)
+  config:
+    html_sidebars:
+        # Added version-switcher and the default primary sidebar
+        "**": ["navbar-logo.html",
+               "icon-links.html",
+               "search-button-field.html",
+               "version-switcher.html",
+               "sbt-sidebar-nav.html"]
+    html_theme_options:
+      switcher:
+        json_url: "https://gist.githubusercontent.com/mwcraig/8c8bf204fdff0a972c170f377d154cc7/raw/df52df0b14549341eb721eab7f479380b3c246d1/switcher.json"
+        version_match: 'dev'
diff --git a/switcher.json b/switcher.json
new file mode 100644
index 0000000..4e343d5
--- /dev/null
+++ b/switcher.json
@@ -0,0 +1,14 @@
+[
+    {
+        "version": "2.0.1",
+        "url": "https://www.astropy.org/ccd-reduction-and-photometry-guide/v/2.0.1/"
+    },
+    {
+        "version": "2.0.0",
+        "url": "https://www.astropy.org/ccd-reduction-and-photometry-guide/v/2.0.0/"
+    },
+    {
+        "name": "dev",
+        "url": "https://www.astropy.org/ccd-reduction-and-photometry-guide/v/dev/"
+    }
+]