diff --git a/tools/repeatexplorer2/macros.xml b/tools/repeatexplorer2/macros.xml
index 495039c..df7ce03 100644
--- a/tools/repeatexplorer2/macros.xml
+++ b/tools/repeatexplorer2/macros.xml
@@ -2,6 +2,11 @@
     <token name="@TOOL_VERSION@">2.3.8</token>
     <token name="@VERSION_SUFFIX@">0</token>
     <token name="@PROFILE@">23.0</token>
+    <xml name="biotools">
+        <xrefs>
+            <xref type="bio.tools">repeatexplorer2</xref>
+        </xrefs>
+    </xml>
     <xml name="requirements">
         <requirements>
             <container type="docker">kavonrtep/repeatexplorer:@TOOL_VERSION@</container>