diff --git a/Userland/Libraries/LibJS/Heap/GCPtr.h b/Userland/Libraries/LibJS/Heap/GCPtr.h
index 8a821167f6..398a31cb99 100644
--- a/Userland/Libraries/LibJS/Heap/GCPtr.h
+++ b/Userland/Libraries/LibJS/Heap/GCPtr.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Traits.h>
 #include <AK/Types.h>
 
 namespace JS {
@@ -217,3 +218,23 @@ inline bool operator==(NonnullGCPtr<T> const& a, GCPtr<U> const& b)
 }
 
 }
+
+namespace AK {
+
+template<typename T>
+struct Traits<JS::GCPtr<T>> : public GenericTraits<JS::GCPtr<T>> {
+    static unsigned hash(JS::GCPtr<T> const& value)
+    {
+        return Traits<T*>::hash(value.ptr());
+    }
+};
+
+template<typename T>
+struct Traits<JS::NonnullGCPtr<T>> : public GenericTraits<JS::NonnullGCPtr<T>> {
+    static unsigned hash(JS::NonnullGCPtr<T> const& value)
+    {
+        return Traits<T*>::hash(value.ptr());
+    }
+};
+
+}