diff --git a/src/rules/validTypes.js b/src/rules/validTypes.js
index 3164a5c7f..bf92cad0e 100644
--- a/src/rules/validTypes.js
+++ b/src/rules/validTypes.js
@@ -11,6 +11,7 @@ const inlineTags = new Set([
 ]);
 
 const jsdocTypePrattKeywords = new Set([
+  'extends',
   'import',
   'is',
   'readonly',