diff --git a/.github/linter/customRules.ts b/.github/linter/customRules.ts
index 163e925be..ede454a97 100644
--- a/.github/linter/customRules.ts
+++ b/.github/linter/customRules.ts
@@ -121,6 +121,8 @@ const requiredMetadata = {
 
 const optionalMetadata = {
   feature: {},
+  supersedes: {},
+  extends: {},
 }
 
 export const metadataSimdIsValid = {
@@ -295,4 +297,4 @@ export const metadataStatusIsValid = {
       })
     }
   },
-}
\ No newline at end of file
+}