diff --git a/src/languages/esql.js b/src/languages/esql.js
index 935268c..e2afcda 100644
--- a/src/languages/esql.js
+++ b/src/languages/esql.js
@@ -53,6 +53,7 @@ export default function(hljs) {
     'RIGHT',
     'ROW',
     'RRF',
+    'SAMPLE',
     'SHOW INFO',
     'SHOW',
     'SORT',