diff --git a/developers/preparing/linux.html b/developers/preparing/linux.html
index ae9e19a..b65e298 100644
--- a/developers/preparing/linux.html
+++ b/developers/preparing/linux.html
@@ -408,7 +408,7 @@
 </div>
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 <div class="content">
-<pre>sudo apt-get install python-dev</pre>
+<pre>sudo apt-get install python-dev python-is-python3</pre>
 </div>
 </div>
 <div class="paragraph">