Document --3to4

diff --git a/docs/reference/gtk/gtk4-builder-tool.xml b/docs/reference/gtk/gtk4-builder-tool.xml
index e9f497599ec9a6e8089fd0862fa06b838647c2ca..992f2d9db14aae9eef45538b1721bb3b4acca39c 100644 (file)
--- a/docs/reference/gtk/gtk4-builder-tool.xml
+++ b/docs/reference/gtk/gtk4-builder-tool.xml
@@ -79,6 +79,10 @@
     <term><option>--replace</option></term>
       <listitem><para>Write the content back to the .ui file instead of stdout.</para></listitem>
     </varlistentry>
+    <varlistentry>
+    <term><option>--3to4</option></term>
+      <listitem><para>Transform a GTK 3 ui file to GTK 4</para></listitem>
+    </varlistentry>
   </variablelist>
 </refsect1>