diff --git a/crs_reference.md b/crs_reference.md
index b239ca09..ccef577e 100644
--- a/crs_reference.md
+++ b/crs_reference.md
@@ -8,7 +8,7 @@ they reference to each other. To see the example CRs check
 ## Environment Variables
 
 The user is required to set the following environment variables before applying
-the [CRs](https://github.com/metal3-io/metal3-dev-env/tree/master/crs)
+the [CRs](https://github.com/metal3-io/metal3-dev-env/tree/b5a53ecf9576c6deab81f692733782d4c5e8091a/crs)
 
 ```console
 CLUSTER_NAME