diff --git a/dev-tools/doap/lucene.rdf b/dev-tools/doap/lucene.rdf
index 029109385129..8b4bfae030ec 100644
--- a/dev-tools/doap/lucene.rdf
+++ b/dev-tools/doap/lucene.rdf
@@ -67,6 +67,13 @@
     </maintainer>
 
     <!-- NOTE: please insert releases in numeric order, NOT chronologically. -->
+    <release>
+       <Version>
+         <name>lucene-9.9.1</name>
+         <created>2023-12-16</created>
+         <revision>9.9.1</revision>
+       </Version>
+    </release>
     <release>
        <Version>
          <name>lucene-9.9.0</name>