diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 1677c50..ab39299 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         version:
-          - '1.6'
+          - '1.7'
           - '1'
           - 'nightly'
         os:
diff --git a/Project.toml b/Project.toml
index ebfda3c..7a76a59 100644
--- a/Project.toml
+++ b/Project.toml
@@ -3,7 +3,7 @@ uuid = "65164825-a06a-491c-beb8-9961b1a95625"
 version = "0.1.0"
 
 [compat]
-julia = "1.6"
+julia = "1.7"
 
 [extras]
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
diff --git a/README.md b/README.md
index 4c5a85e..b90316d 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 # UnzipLoops
 
+![Julia version](https://img.shields.io/badge/julia-%3E%3D%201.7-blue)
+
 This package provides one single function `broadcast_unzip(f, As...)` that works similar to `map(f,
 As...)` but outputs different data layout.
 
diff --git a/README_zh.md b/README_zh.md
index c639e4b..2ff062c 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -1,5 +1,7 @@
 # UnzipLoops
 
+![Julia version](https://img.shields.io/badge/julia-%3E%3D%201.7-blue)
+
 这个包提供一个函数: `broadcast_unzip(f, As...)`.
 
 ## 一个简单的例子