diff --git a/README.md b/README.md
index a7a9f3e..6b06030 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,9 @@ written in Python.
 Note that the core does **NOT** implement padding of final block. The
 caller is expected to handle padding.
 
+## Contact information ##
+For customization and integration work, please contact [Assured Security Consultants](https://www.assured.se/contact).
+
 
 ## Implementation details ##
 The sha256 design is divided into the following sections.