diff --git a/openapi/swiftorg.yaml b/openapi/swiftorg.yaml
index 3bbcd4ca1..4b0a959c4 100644
--- a/openapi/swiftorg.yaml
+++ b/openapi/swiftorg.yaml
@@ -262,6 +262,7 @@ components:
         - '6.0'
         - '6.1'
         - '6.2'
+        - '6.3'
     SourceBranch:
       anyOf:
         - $ref: '#/components/schemas/KnownSourceBranch'