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 <h2>Required Libraries</h2>
 <p>LeoCAD requires Qt 5.4 or later to compile. You can download the Qt SDK for all platforms from the <a href="http://qt-project.org">Qt Project Homepage</a>.</p>
 <p>Linux users may find it easier to use their package manager instead with the following command:</p>
-<div class="highlight"><code>$ sudo apt-get install qtbase5-dev qttools5-dev-tools libqt5opengl5-dev zlib-dev</code></div>
+<div class="highlight"><code>$ sudo apt-get install qtbase5-dev qttools5-dev-tools libqt5opengl5-dev zlib1g-dev</code></div>
 <p>Although it is not required, it is recommended to also download and install a <a href="library.html">parts library</a>, otherwise only a very small set of basic parts will be available.</p>
 
 <h2>Compiling</h2>