diff --git a/src/schemas/json/vsix-publish.json b/src/schemas/json/vsix-publish.json
index 10b9644c7bc..b3d34463a62 100644
--- a/src/schemas/json/vsix-publish.json
+++ b/src/schemas/json/vsix-publish.json
@@ -182,6 +182,7 @@
               "start pages",
               "team development",
               "testing",
+              "theme",
               "visual studio extensions",
               "wcf",
               "web",