diff --git a/appendices/dependencies.xml b/appendices/dependencies.xml
index ed44374ea..30f2b05a6 100644
--- a/appendices/dependencies.xml
+++ b/appendices/dependencies.xml
@@ -3192,6 +3192,7 @@
         <segtitle>&external;</segtitle>
         <seglistitem>
           <seg>
+            <ulink url="&blfs-book;general/asciidoctor.html">Asciidoctor</ulink>,
             <ulink
               url="https://people.redhat.com/sgrubb/libcap-ng/">Libcap-NG</ulink>,
             <ulink url="&github;/openSUSE/libeconf">libeconf</ulink>,
@@ -3200,7 +3201,8 @@
             <ulink
               url="&blfs-book;postlfs/linux-pam.html">Linux-PAM</ulink>,
             <ulink
-              url="&blfs-book;postlfs/smartmontools.html">smartmontools</ulink>, and
+              url="&blfs-book;postlfs/smartmontools.html">smartmontools</ulink>,
+            <ulink url="https://po4a.org/index.php.en">po4a</ulink>, and
             <ulink url="&blfs-book;general/slang.html">slang</ulink>
           </seg>
         </seglistitem>