diff --git a/package.json b/package.json
index 84933b1..33a6037 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
   "homepage": "https://github.com/tc39/proposal-iterator-sequencing#readme",
   "devDependencies": {
     "@tc39/ecma262-biblio": "2.1.2663",
-    "ecmarkup": "18.1.0",
+    "ecmarkup": "18.3.1",
     "typescript": "5.2.2"
   }
 }