diff --git a/README.md b/README.md
index b9ba9a1..a065ec5 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ Visualize Erlang/Elixir Nodes On The Command Line base on [recon](https://github
 %% rebar.config
 {deps, [observer_cli]}
 %% erlang.mk
-dep_observer_cli = hex 1.6.1
+dep_observer_cli = hex 1.6.2
 ```
 **Elixir**
 ```elixir
@@ -195,6 +195,10 @@ Support F/B to page up/down.
 
 ----------------
 ### Changelog
+- 1.6.2
+  - fixed crash when ps command not found on windows.
+- 1.6.1
+  - remove precise opt version
 - 1.6.0
    - hidden schedule usage default
    - format by erlformat
diff --git a/mix.exs b/mix.exs
index bd3d81b..fe41c1e 100644
--- a/mix.exs
+++ b/mix.exs
@@ -4,7 +4,7 @@ defmodule ObserverCli.MixProject do
   def project do
     [
       app: :observer_cli,
-      version: "1.6.1",
+      version: "1.6.2",
       language: :erlang,
       description: "observer in shell",
       deps: [
diff --git a/src/observer_cli.app.src b/src/observer_cli.app.src
index 5b191c5..13fd478 100644
--- a/src/observer_cli.app.src
+++ b/src/observer_cli.app.src
@@ -1,7 +1,7 @@
 {application, observer_cli,
     [
         {description, "Visualize Erlang Nodes On The Command Line"},
-        {vsn, "1.6.1"},
+        {vsn, "1.6.2"},
         {modules, [
             observer_cli
         ]},