diff --git a/README.md b/README.md
index e88b321..1b086e2 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,7 @@ Users and Use-cases
   * [Farsight](https://farsightsecurity.com)
   * [CIRCL](https://www.circl.lu/services/passive-dns/)
   * [D4 Project Passive DNS](https://www.d4-project.org/2019/05/28/passive-dns-tutorial.html)
+  * [balboa](https://github.com/DCSO/balboa)
   * 360CN?
   * ...