diff --git a/package.json b/package.json
index e03f1800..487f994d 100644
--- a/package.json
+++ b/package.json
@@ -149,7 +149,7 @@
     "@ungap/essential-weakset": "^0.1.2",
     "@ungap/is-array": "^0.1.1",
     "@ungap/template-tag-arguments": "^0.3.1",
-    "@ungap/weakmap": "^0.1.4",
+    "@ungap/weakmap": "^0.2.0",
     "disconnected": "^0.2.1",
     "domdiff": "^2.2.2",
     "domtagger": "^0.6.2",