diff --git a/USERS.md b/USERS.md
index 86122cd9a..9d7e3938c 100644
--- a/USERS.md
+++ b/USERS.md
@@ -85,3 +85,6 @@ quasardb uses a heavily tuned RocksDB as its persistence layer.
 
 ## LzLabs
 LzLabs is using RocksDB as a storage engine in their multi-database distributed framework to store application configuration and user data.
+
+## ProfaneDB
+[ProfaneDB](https://profanedb.gitlab.io/) is a database for Protocol Buffers, and uses RocksDB for storage. It is accessible via gRPC, and the schema is defined using directly `.proto` files.