diff --git a/CBPs/cbp-0004.md b/CBPs/cbp-0004.md
index c900a17..f1ff41f 100644
--- a/CBPs/cbp-0004.md
+++ b/CBPs/cbp-0004.md
@@ -16,7 +16,7 @@ Having a rich, high-quality infrastructure accelerates the entire IC ecosystem,
  
 **What projects can be added to the CBD infrastructure projects list?**
 
-Infrastructure projects on IC, e.g., infrastructure that can be used as development by most projects, services that can be integrated and used by most projects, etc.
+**Open Source** infrastructure projects on IC, e.g., infrastructure that can be used as development by most projects, services that can be integrated and used by most projects, etc.
 
 **How to join the CBD infrastructure projects list?**