diff --git a/GitVersion.yml b/GitVersion.yml
index 4f5b83413..211c0c9a9 100644
--- a/GitVersion.yml
+++ b/GitVersion.yml
@@ -20,5 +20,5 @@ branches:
     - feature
     - support
     - hotfix
-next-version: "4.0"
+next-version: "4.1"
 
diff --git a/README.md b/README.md
index 75c9ee01f..5b97c9cbc 100644
--- a/README.md
+++ b/README.md
@@ -404,6 +404,16 @@ Benchmark suites for various components.
 
 The Source Generator which generates types from Json Schema.
 
+## V4.1 Updates
+
+### YAML support
+
+We now support YAML documents for the CLI tool.
+
+You can mix-and-match YAML and JSON documents in the same schema set, and the tool will generate code for either.
+
+Your JSON schema can be embedded in a YAML document (such as a YAML-based OpenAPI or AsyncAPI document), and you can resolve internal references just as with a JSON document.
+
 ## V4.0 Updates
 
 There are a number of significant changes in this release