diff --git a/src/languages/java.js b/src/languages/java.js
index 9a0cf137f5..5f996558f7 100644
--- a/src/languages/java.js
+++ b/src/languages/java.js
@@ -72,7 +72,10 @@ export default function(hljs) {
     'requires',
     'exports',
     'do',
-    'sealed'
+    'sealed',
+    'non-sealed',
+    'when',
+    'yield'
   ];
 
   const BUILT_INS = [