diff --git a/Userland/Libraries/LibWeb/Bindings/Serializable.h b/Userland/Libraries/LibWeb/Bindings/Serializable.h
index c4ef2714774..67d76703a96 100644
--- a/Userland/Libraries/LibWeb/Bindings/Serializable.h
+++ b/Userland/Libraries/LibWeb/Bindings/Serializable.h
@@ -21,7 +21,7 @@ public:
     // https://html.spec.whatwg.org/multipage/structured-data.html#serialization-steps
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord&, bool for_storage, HTML::SerializationMemory&) = 0;
     // https://html.spec.whatwg.org/multipage/structured-data.html#deserialization-steps
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position) = 0;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position, HTML::DeserializationMemory&) = 0;
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/FileAPI/Blob.cpp b/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
index 16feb91e5f4..fadcedadff8 100644
--- a/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
@@ -165,7 +165,7 @@ WebIDL::ExceptionOr<void> Blob::serialization_steps(HTML::SerializationRecord& r
     return {};
 }
 
-WebIDL::ExceptionOr<void> Blob::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position)
+WebIDL::ExceptionOr<void> Blob::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&)
 {
     auto& vm = this->vm();
 
diff --git a/Userland/Libraries/LibWeb/FileAPI/Blob.h b/Userland/Libraries/LibWeb/FileAPI/Blob.h
index a1b7facb1af..c01c4cfb61b 100644
--- a/Userland/Libraries/LibWeb/FileAPI/Blob.h
+++ b/Userland/Libraries/LibWeb/FileAPI/Blob.h
@@ -58,7 +58,7 @@ public:
     virtual StringView interface_name() const override { return "Blob"sv; }
 
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord& record, bool for_storage, HTML::SerializationMemory&) override;
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const& record, size_t& position) override;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&) override;
 
 protected:
     Blob(JS::Realm&, ByteBuffer, String type);
diff --git a/Userland/Libraries/LibWeb/FileAPI/File.cpp b/Userland/Libraries/LibWeb/FileAPI/File.cpp
index 5f44390816b..bac8fcaf935 100644
--- a/Userland/Libraries/LibWeb/FileAPI/File.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/File.cpp
@@ -109,7 +109,7 @@ WebIDL::ExceptionOr<void> File::serialization_steps(HTML::SerializationRecord& r
     return {};
 }
 
-WebIDL::ExceptionOr<void> File::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position)
+WebIDL::ExceptionOr<void> File::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&)
 {
     auto& vm = this->vm();
 
diff --git a/Userland/Libraries/LibWeb/FileAPI/File.h b/Userland/Libraries/LibWeb/FileAPI/File.h
index 11df4ece07c..5a8fa860943 100644
--- a/Userland/Libraries/LibWeb/FileAPI/File.h
+++ b/Userland/Libraries/LibWeb/FileAPI/File.h
@@ -33,7 +33,7 @@ public:
     virtual StringView interface_name() const override { return "File"sv; }
 
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord& record, bool for_storage, HTML::SerializationMemory&) override;
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position) override;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position, HTML::DeserializationMemory&) override;
 
 private:
     File(JS::Realm&, ByteBuffer, String file_name, String type, i64 last_modified);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
index 19081d6a5ba..00b0f96b73f 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
@@ -759,7 +759,7 @@ WebIDL::ExceptionOr<void> DOMMatrixReadOnly::serialization_steps(HTML::Serializa
 }
 
 // https://drafts.fxtf.org/geometry/#structured-serialization
-WebIDL::ExceptionOr<void> DOMMatrixReadOnly::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position)
+WebIDL::ExceptionOr<void> DOMMatrixReadOnly::deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&)
 {
     bool is_2d = HTML::deserialize_primitive_type<bool>(record, position);
     // 1. If serialized.[[Is2D]] is true:
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
index f30b3b17bd7..f779da523c0 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.h
@@ -116,7 +116,7 @@ public:
 
     virtual StringView interface_name() const override { return "DOMMatrixReadOnly"sv; }
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord&, bool for_storage, HTML::SerializationMemory&) override;
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const& record, size_t& position) override;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const& record, size_t& position, HTML::DeserializationMemory&) override;
 
 protected:
     DOMMatrixReadOnly(JS::Realm&, double m11, double m12, double m21, double m22, double m41, double m42);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
index cb958eac12a..ee052a79805 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
@@ -79,7 +79,7 @@ WebIDL::ExceptionOr<void> DOMPointReadOnly::serialization_steps(HTML::Serializat
     return {};
 }
 
-WebIDL::ExceptionOr<void> DOMPointReadOnly::deserialization_steps(ReadonlySpan<u32> const& serialized, size_t& position)
+WebIDL::ExceptionOr<void> DOMPointReadOnly::deserialization_steps(ReadonlySpan<u32> const& serialized, size_t& position, HTML::DeserializationMemory&)
 {
     // 1. Set value’s x coordinate to serialized.[[X]].
     m_x = HTML::deserialize_primitive_type<double>(serialized, position);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.h b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.h
index 61e6d6ad4a2..0c35d222c99 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.h
+++ b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.h
@@ -46,7 +46,7 @@ public:
 
     virtual StringView interface_name() const override { return "DOMPointReadOnly"sv; }
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord&, bool for_storage, HTML::SerializationMemory&) override;
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position) override;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position, HTML::DeserializationMemory&) override;
 
 protected:
     DOMPointReadOnly(JS::Realm&, double x, double y, double z, double w);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
index b9a135ba9e6..c00e7ff2db4 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
@@ -65,7 +65,7 @@ WebIDL::ExceptionOr<void> DOMRectReadOnly::serialization_steps(HTML::Serializati
 }
 
 // https://drafts.fxtf.org/geometry/#structured-serialization
-WebIDL::ExceptionOr<void> DOMRectReadOnly::deserialization_steps(ReadonlySpan<u32> const& serialized, size_t& position)
+WebIDL::ExceptionOr<void> DOMRectReadOnly::deserialization_steps(ReadonlySpan<u32> const& serialized, size_t& position, HTML::DeserializationMemory&)
 {
     // 1. Set value’s x coordinate to serialized.[[X]].
     auto x = HTML::deserialize_primitive_type<double>(serialized, position);
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.h b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.h
index c6450ea458c..27dfa405e09 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.h
+++ b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.h
@@ -71,7 +71,7 @@ public:
 
     virtual StringView interface_name() const override { return "DOMRectReadOnly"sv; }
     virtual WebIDL::ExceptionOr<void> serialization_steps(HTML::SerializationRecord&, bool for_storage, HTML::SerializationMemory&) override;
-    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position) override;
+    virtual WebIDL::ExceptionOr<void> deserialization_steps(ReadonlySpan<u32> const&, size_t& position, HTML::DeserializationMemory&) override;
 
 protected:
     DOMRectReadOnly(JS::Realm&, double x, double y, double width, double height);
diff --git a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
index eded9d8885c..e6c80c438f9 100644
--- a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
+++ b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
@@ -949,7 +949,7 @@ public:
             else {
                 // 1. Perform the appropriate deserialization steps for the interface identified by serialized.[[Type]], given serialized, value, and targetRealm.
                 auto& serializable = dynamic_cast<Bindings::Serializable&>(value.as_object());
-                TRY(serializable.deserialization_steps(m_serialized, m_position));
+                TRY(serializable.deserialization_steps(m_serialized, m_position, m_memory));
             }
         }