diff --git a/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.cpp b/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.cpp
index 6895545d6c..8785cea00c 100644
--- a/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.cpp
@@ -45,4 +45,10 @@ bool PrivateName::operator==(PrivateName const& rhs) const
     return unique_id == rhs.unique_id && description == rhs.description;
 }
 
+void PrivateEnvironment::visit_edges(Visitor& visitor)
+{
+    Cell::visit_edges(visitor);
+    visitor.visit(m_outer_environment);
+}
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.h b/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.h
index 81f8710cdf..2c129f2d05 100644
--- a/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.h
+++ b/Userland/Libraries/LibJS/Runtime/PrivateEnvironment.h
@@ -36,6 +36,7 @@ public:
 
 private:
     virtual char const* class_name() const override { return "PrivateEnvironment"; }
+    virtual void visit_edges(Visitor&) override;
 
     auto find_private_name(FlyString const& description) const
     {