diff --git a/release-notes/releases-index.json b/release-notes/releases-index.json
index efbff8cb..2058f2af 100644
--- a/release-notes/releases-index.json
+++ b/release-notes/releases-index.json
@@ -31,7 +31,7 @@
             "latest-runtime": "3.1.21",
             "latest-sdk": "3.1.415",
             "product": ".NET Core",
-            "support-phase": "LTS",
+            "support-phase": "lts",
             "eol-date": "2022-12-03",
             "releases.json": "https://dotnetcli.blob.core.windows.net/dotnet/release-metadata/3.1/releases.json"
         },