diff --git a/Cargo.lock b/Cargo.lock
index 1cb8b50..2042134 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -66,7 +66,7 @@ dependencies = [
 
 [[package]]
 name = "upt"
-version = "0.5.0"
+version = "0.6.0"
 dependencies = [
  "which",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 04e508b..ee24c10 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "upt"
-version = "0.5.0"
+version = "0.6.0"
 edition = "2021"
 authors = ["sigoden <sigoden@gmail.com>"]
 description = "Universal package management tool for any OS"
diff --git a/README.md b/README.md
index d1bbe76..9c1273e 100644
--- a/README.md
+++ b/README.md
@@ -158,7 +158,8 @@ Some platforms may support multiple package management tools, and upt selects on
 You can specify the package manager that UPT should use by setting the `UPT_TOOL` environment variable.
 
 ```sh
-UPT_TOOL=snap upt install $pkg             # run snap to install $pkg
+UPT_TOOL=brew upt install $pkg            # equal to `brew install $pkg`
+UPT_TOOL=nix-env upt install $pkg         # equal to `nix-env -i $pkg`
 ```
 
 ## License