diff --git a/doc/install-requirements.xml b/doc/install-requirements.xml
index 42657683..21138c71 100644
--- a/doc/install-requirements.xml
+++ b/doc/install-requirements.xml
@@ -128,6 +128,9 @@
             <entry>
               9.4, 9.5, 9.6, 10, 11, 12, 13, 15
             </entry>
+            <entry>
+              &nbsp;
+            </entry>
           </row>
 
           <row>