diff --git a/ofl/notoserif/METADATA.pb b/ofl/notoserif/METADATA.pb
index fca334feb4e81731bdcf1eddd626ee693a71a869..a6d6afe336b19b82d6caa99b7c3e711575b59aae 100644
--- a/ofl/notoserif/METADATA.pb
+++ b/ofl/notoserif/METADATA.pb
@@ -28,6 +28,7 @@ subsets: "greek-ext"
 subsets: "latin"
 subsets: "latin-ext"
 subsets: "menu"
+subsets: "math"
 subsets: "vietnamese"
 axes {
   tag: "wdth"