diff --git a/tools/getmlst/getmlst.xml b/tools/getmlst/getmlst.xml
index 0b692e29..116e1d58 100644
--- a/tools/getmlst/getmlst.xml
+++ b/tools/getmlst/getmlst.xml
@@ -3,6 +3,11 @@
     <requirements>
         <requirement type="package" version="0.1.4.6">srst2</requirement>
     </requirements>
+    <xml name="xrefs">
+      <xrefs>
+        <xref type="bio.tools">getmlst</xref>
+      </xrefs>
+    </xml>
     <stdio>
         <exit_code range="2"  level="fatal"   description="Please be more specific."/>
         <exit_code range="1"  level="fatal"   description="No species matched your query."/>
diff --git a/tools/hivtrace/hivtrace.xml b/tools/hivtrace/hivtrace.xml
index 2c50b9dd..999fa8eb 100644
--- a/tools/hivtrace/hivtrace.xml
+++ b/tools/hivtrace/hivtrace.xml
@@ -4,6 +4,11 @@
   <requirements>
     <requirement type="package" version="0.1.4">hivtrace</requirement>
   </requirements>
+  <xml name="xrefs">
+    <xrefs>
+      <xref type="bio.tools">hivtrace</xref>
+    </xrefs>
+  </xml>
   <stdio>
     <exit_code range="1:" />
   </stdio>