diff --git a/.github/workflows/build_maixcam.yml b/.github/workflows/build_maixcam.yml
index cc4de39c..e0f3fc75 100755
--- a/.github/workflows/build_maixcam.yml
+++ b/.github/workflows/build_maixcam.yml
@@ -54,7 +54,8 @@ jobs:
           echo "-- Build MaixPy for Linux now --"
           echo "--------------------------------"
           sudo apt update -y
-          sudo apt install -y libopencv-dev libopencv-contrib-dev libsdl2-dev
+          sudo apt install -y libopencv-dev libopencv-contrib-dev libsdl2-dev cmake
+          cmake --version
           python setup.py bdist_wheel linux
           echo "----------------------------------"
           echo "-- Build MaixPy for MaixCAM now --"
diff --git a/README.md b/README.md
index 75b9c043..7aa20792 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-MaixPy
+MaixPy (v4)
 ======
 
 <div align="center">
@@ -7,7 +7,7 @@ MaixPy
 
 **Let's Sipeed up, Maximize AI's power!**
 
-**MaixPy**: Easily create AI projects with Python on edge device
+**MaixPy** (v4): Easily create AI projects with Python on edge device
 
 <h3>
     <a href="https://wiki.sipeed.com/maixpy/doc/en/index.html"> Quick Start </a> |
diff --git a/README_ZH.md b/README_ZH.md
index 5644a914..41795eba 100644
--- a/README_ZH.md
+++ b/README_ZH.md
@@ -1,4 +1,4 @@
-MaixPy
+MaixPy (v4)
 ======
 
 <div align="center">
@@ -7,7 +7,7 @@ MaixPy
 
 **Let's Sipeed up, Maximize AI's power!**
 
-**MaixPy**: 快速落地 AI 视觉、听觉应用
+**MaixPy** (v4): 快速落地 AI 视觉、听觉应用
 
 <h3>
     <a href="https://wiki.sipeed.com/maixpy/doc/index.html"> 快速开始 </a> |