diff --git a/CHANGELOG.md b/CHANGELOG.md
index f62fb8f..5d74744 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,12 @@
 # Changelog
 
-## [2.0.0] - 2020-11-16 - Jindo (진도, 珍島)
+## [1.20.0] - 2020-11-16 - Jindo (진도, 珍島)
+
+Major API refactoring and simplification. From now on this library will have 
+backward compatibility and support of major versions of NeoFS-API by having 
+**version specific** files in `vN` dirs and **version independent** SDK 
+structures and client in `pkg`. This version supports NeoFS-API v2.0.X
 
-Major API refactoring and simplification.
 
 ### Added
 - cross-protocol ```v2``` message types
@@ -396,4 +400,4 @@ Initial public release
 [1.1.0]: https://github.com/nspcc-dev/neofs-api-go/compare/v1.0.0...v1.1.0
 [1.2.0]: https://github.com/nspcc-dev/neofs-api-go/compare/v1.1.0...v1.2.0
 [1.3.0]: https://github.com/nspcc-dev/neofs-api-go/compare/v1.2.0...v1.3.0
-[2.0.0]: https://github.com/nspcc-dev/neofs-api-go/compare/v1.3.0...v2.0.0
+[1.20.0]: https://github.com/nspcc-dev/neofs-api-go/compare/v1.3.0...v1.20.0
\ No newline at end of file
diff --git a/README.md b/README.md
index ca3684b..0024640 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,14 @@
 Go implementation of recent [NeoFS API](https://github.com/nspcc-dev/neofs-api)
 versions and SDK layer working with all of them in a handy way.
 
+## NeoFS-API compatibility
+
+|neofs-api-go version|supported NeoFS-API versions|
+|:------------------:|:--------------------------:|
+|< v1.20.0 **(unsupported)**|up to v1.2.0|
+|v1.20.0|[v2.0.2](https://github.com/nspcc-dev/neofs-api/releases/tag/v2.0.2)|
+
+
 ## Contributing
 
 Feel free to contribute to this project after reading the [contributing