diff --git a/package.json b/package.json
index e03f1800..2830c616 100644
--- a/package.json
+++ b/package.json
@@ -145,7 +145,7 @@
   "dependencies": {
     "@ungap/create-content": "^0.1.4",
     "@ungap/custom-event": "^0.2.0",
-    "@ungap/essential-map": "^0.2.0",
+    "@ungap/essential-map": "^0.3.0",
     "@ungap/essential-weakset": "^0.1.2",
     "@ungap/is-array": "^0.1.1",
     "@ungap/template-tag-arguments": "^0.3.1",