diff --git a/themes/schema.json b/themes/schema.json
index 897eb752..ab6398d0 100644
--- a/themes/schema.json
+++ b/themes/schema.json
@@ -303,6 +303,7 @@
             "terraform",
             "ui5tooling",
             "unity",
+            "upgrade",
             "wakatime",
             "winreg",
             "withings",