diff --git a/CHANGELOG.md b/CHANGELOG.md
index c67dbb7..a7ed563 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,14 +6,17 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+
+## [Nofix]
+- ctype `long` caused compiling error in MacOS as noted on [#44]. Not working on linux box.
+
+## [0.6.2]
+- Fixed `dutil/MapDataset`
 - [#69] change package name `tensor` -> `ts` for easy coding.
 - [#68] simplify `VarStore` struct and adde more APIs for `VarStore` and `Optimizer`
 - Fixed pickle with zero data length
 - Added `gotch.CleanCache()` API.
 
-## [Nofix]
-- ctype `long` caused compiling error in MacOS as noted on [#44]. Not working on linux box.
-
 ## [0.6.1]
 - Fixed wrong `cacheDir` and switch off logging.
 - Added more pickle classes to handle unpickling
diff --git a/README.md b/README.md
index 71a6857..d6c051d 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@
 
 `gotch` is in active development mode and may have API breaking changes. Feel free to pull request, report issues or discuss any concerns. All contributions are welcome. 
 
-`gotch` current version is **v0.6.1**
+`gotch` current version is **v0.6.2**
 
 ## Dependencies
 
@@ -53,7 +53,7 @@
 ```bash
     wget https://raw.githubusercontent.com/sugarme/gotch/master/setup-gotch.sh
     chmod +x setup-gotch.sh
-    export CUDA_VER=cpu && export GOTCH_VER=v0.6.1 && bash setup-gotch.sh
+    export CUDA_VER=cpu && export GOTCH_VER=v0.6.2 && bash setup-gotch.sh
 ```
 
 ### GPU
@@ -91,9 +91,9 @@
     wget https://raw.githubusercontent.com/sugarme/gotch/master/setup-gotch.sh
     chmod +x setup-gotch.sh
     # CUDA 10.2
-    export CUDA_VER=10.2 && export GOTCH_VER=v0.6.1 && bash setup-gotch.sh
+    export CUDA_VER=10.2 && export GOTCH_VER=v0.6.2 && bash setup-gotch.sh
     # CUDA 11.1
-    export CUDA_VER=11.1 && export GOTCH_VER=v0.6.1 && bash setup-gotch.sh
+    export CUDA_VER=11.1 && export GOTCH_VER=v0.6.2 && bash setup-gotch.sh
 ```
 
 ## Examples
diff --git a/setup-gotch.sh b/setup-gotch.sh
index f61cd4d..901f64d 100644
--- a/setup-gotch.sh
+++ b/setup-gotch.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 
-GOTCH_VERSION="${GOTCH_VER:-v0.5.0}"
+GOTCH_VERSION="${GOTCH_VER:-v0.6.2}"
 CUDA_VERSION="${CUDA_VER:-11.1}"
 
 if [ -z $GOPATH ] then