diff --git a/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.cpp b/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.cpp
index 822f788e50b..ec58b565321 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.cpp
@@ -13,6 +13,13 @@
 
 namespace JS {
 
+void PromiseValueList::visit_edges(Visitor& visitor)
+{
+    Cell::visit_edges(visitor);
+    for (auto& val : m_values)
+        visitor.visit(val);
+}
+
 PromiseResolvingElementFunction::PromiseResolvingElementFunction(size_t index, PromiseValueList& values, PromiseCapability capability, RemainingElements& remaining_elements, Object& prototype)
     : NativeFunction(prototype)
     , m_index(index)
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.h b/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.h
index ca9dbc42f10..cddac8f192f 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.h
+++ b/Userland/Libraries/LibJS/Runtime/PromiseResolvingElementFunctions.h
@@ -35,6 +35,7 @@ public:
 
 private:
     virtual const char* class_name() const override { return "PromiseValueList"; }
+    virtual void visit_edges(Visitor&) override;
 
     Vector<Value> m_values;
 };