diff --git a/README.md b/README.md
index bbc96276d..0e25b6b8e 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,8 @@ The core infrastructure is written in C# using .NET Core with ASP.NET Core. The
 - [Visual Studio](https://www.visualstudio.com/vs/) (Windows and macOS)
 - [Visual Studio Code](https://code.visualstudio.com/) (other)
 
+*These tools are free to use.*
+
 ### API
 
 ```