diff --git a/README.md b/README.md
index cc46260..2bf1080 100644
--- a/README.md
+++ b/README.md
@@ -46,3 +46,7 @@ Go Report Card is an open source project run by volunteers, and contributions ar
 ### License
 
 The code is licensed under the permissive Apache v2.0 licence. This means you can do what you like with the software, as long as you include the required notices. [Read this](https://tldrlegal.com/license/apache-license-2.0-(apache-2.0)) for a summary.
+
+### Notes
+
+We don't support this on Windows since we have no way to test it on Windows.