diff --git a/genkey.xml b/genkey.xml
index 50b3574..536abbe 100644
--- a/genkey.xml
+++ b/genkey.xml
@@ -35,6 +35,8 @@
         <arg><option>--genreq</option></arg>
         <arg><option>--makeca</option></arg>
         <arg><option>--nss</option></arg>
+        <arg><option>--renew</option></arg>
+        <arg><option>--isca</option></arg>
       </group>
       <arg choice="req"><replaceable>hostname</replaceable></arg>
     </cmdsynopsis>
@@ -86,6 +88,18 @@
         example, for renewal).</simpara></listitem>
       </varlistentry>
 
+
+      <varlistentry>
+        <term><option>--renew</option></term>
+        <listitem><simpara>Used with --genreq to indicate a renewal,
+        the existing keypair will be used.</simpara></listitem>
+      </varlistentry>
+
+      <varlistentry>
+        <term><option>--isca</option></term>
+        <listitem><simpara>The certificate renewal is for a CA.</simpara></listitem>
+      </varlistentry>
+
       <varlistentry>
         <term><option>--days</option> <replaceable>count</replaceable></term>
         <listitem><simpara>When generating a self-signed certificate,