diff --git a/doap.rdf b/doap.rdf
index a7409329ca..8a9254ce2e 100644
--- a/doap.rdf
+++ b/doap.rdf
@@ -36,6 +36,7 @@
     <programming-language>Python</programming-language>
     <programming-language>Go</programming-language>
     <programming-language>Rust</programming-language>
+    <programming-language>C++</programming-language>
     <category rdf:resource="https://projects.apache.org/category/big-data" />
     <category rdf:resource="https://projects.apache.org/category/database" />
     <category rdf:resource="https://projects.apache.org/category/data-engineering" />