diff --git a/docs/_templates/sidebarintro.html b/docs/_templates/sidebarintro.html
index ef296d2..6ca4c11 100644
--- a/docs/_templates/sidebarintro.html
+++ b/docs/_templates/sidebarintro.html
@@ -21,7 +21,7 @@
 <p><a href="http://tinyletter.com/kennethreitz">Join Mailing List</a>.</p>
 <p><a href="https://saythanks.io/to/kennethreitz">Say Thanks!</a></p>
 
-<a href="http://www.dataquest.io/">
+<a href="http://www.dataquest.io/?utm_source=hitchhikersguide&utm_medium=ad">
 <img src="{{ pathto('_static/ad.png', 1) }}" alt="">
 </a>
 
diff --git a/docs/_templates/sidebarlogo.html b/docs/_templates/sidebarlogo.html
index a3d130d..2fbb9b9 100644
--- a/docs/_templates/sidebarlogo.html
+++ b/docs/_templates/sidebarlogo.html
@@ -19,7 +19,7 @@
 <p><a href="https://saythanks.io/to/kennethreitz">Say Thanks!</a></p>
 <p><a href="http://tinyletter.com/kennethreitz">Join Mailing List</a>.</p>
 
-<a href="http://www.dataquest.io/">
+<a href="http://www.dataquest.io/?utm_source=hitchhikersguide&utm_medium=ad">
 <img src="{{ pathto('_static/ad.png', 1) }}" alt="">
 </a>