diff --git a/readthedocs/templates/base.html b/readthedocs/templates/base.html
index 13448b94a..7b08e0687 100644
--- a/readthedocs/templates/base.html
+++ b/readthedocs/templates/base.html
@@ -94,8 +94,8 @@
           <div class="footerlogo"></div>
 
           <ul class="social">
-            <li><a href="https://github.com/rtfd/readthedocs.org"><span class="icon github"></span></a></li>
-            <li><a href="https://twitter.com/readthedocs"><span class="icon twitter"></span></a></li>
+            <li><a href="https://github.com/rtfd/readthedocs.org" rel="noopener noreferrer"><span class="icon github"></span></a></li>
+            <li><a href="https://twitter.com/readthedocs" rel="noopener noreferrer"><span class="icon twitter"></span></a></li>
           </ul>
         </div>