diff --git a/v2_0_cpp_adaptor.md b/v2_0_cpp_adaptor.md
index 50a6c89..9b8267e 100644
--- a/v2_0_cpp_adaptor.md
+++ b/v2_0_cpp_adaptor.md
@@ -42,6 +42,7 @@ msgpack-c provides predefined adaptors for C++ primitive types and standard libr
 | string_ref         | str                         |since 1.2.0|
 | optional           | depends on optional type    |since 1.2.0|
 | fusion sequence    | array                       |since 1.2.0|
+| [variant](v2_0_cpp_variant)    | all types                       |since 1.2.0|
 
 When you use the adaptors for boost containers, you need to define MSGPACK_USE_BOOST.