diff --git a/service/v2/marshal.go b/service/v2/marshal.go
new file mode 100644
index 0000000..54b7d10
--- /dev/null
+++ b/service/v2/marshal.go
@@ -0,0 +1,21 @@
+package v2
+
+func (m *RequestMetaHeader) StableMarshal(buf []byte) ([]byte, error) {
+	// fixme: implement stable
+	return m.Marshal()
+}
+
+func (m *RequestMetaHeader) StableSize() int {
+	// fixme: implement stable
+	return m.Size()
+}
+
+func (m *RequestVerificationHeader) StableMarshal(buf []byte) ([]byte, error) {
+	// fixme: implement stable
+	return m.Marshal()
+}
+
+func (m *RequestVerificationHeader) StableSize() int {
+	// fixme: implement stable
+	return m.Size()
+}