diff --git a/src/README.md b/src/README.md
index 2fc7278..3a2564d 100644
--- a/src/README.md
+++ b/src/README.md
@@ -131,7 +131,7 @@ components:
 
 
 ## References
-* [cloudposse/terraform-aws-components](https://github.com/cloudposse/terraform-aws-components/tree/master/modules/waf) - Cloud Posse's upstream component
+* [cloudposse/terraform-aws-components](https://github.com/cloudposse/terraform-aws-components/tree/main/modules/waf) - Cloud Posse's upstream component
 
 
 [<img src="https://cloudposse.com/logo-300x69.svg" height="32" align="right"/>](https://cpco.io/component)