diff --git a/.github/workflows/platformio-ci.yml b/.github/workflows/platformio-ci.yml
new file mode 100644
index 0000000..01a7e1f
--- /dev/null
+++ b/.github/workflows/platformio-ci.yml
@@ -0,0 +1,29 @@
+# CI documents: https://docs.platformio.org/en/latest/integration/ci/github-actions.html#integration
+name: PlatformIO CI
+
+on: [push]
+
+jobs:
+  build-simple:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        pio_env: ["m5stack-core2-realtime", "m5stack-cores3-realtime"]
+    steps:
+      - uses: actions/checkout@v6
+      - uses: actions/cache@v5
+        with:
+          path: |
+            ~/.cache/pip
+            ~/.platformio/.cache
+          key: ${{ runner.os }}-pio
+      - uses: actions/setup-python@v6
+        with:
+          python-version: "3.11"
+      - name: Install PlatformIO Core
+        run: pip install --upgrade platformio
+      - name: Build PlatformIO
+        run: pio run --environment=$PIO_ENV
+        working-directory: ./firmware
+        env:
+          PIO_ENV: ${{ matrix.pio_env }}
diff --git a/README.md b/README.md
index 8d7c980..7e4544b 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,8 @@
 [English](README_en.md)
 
 # AI Stack-chan Ex
+[![PlatformIO CI](https://github.com/ronron-gh/AI_StackChan_Ex/actions/workflows/platformio-ci.yml/badge.svg)](https://github.com/ronron-gh/AI_StackChan_Ex/actions/workflows/platformio-ci.yml)
+
 robo8080さんの[AIｽﾀｯｸﾁｬﾝ](https://github.com/robo8080/AI_StackChan2)をベースに、次のように機能拡張しています。  
 - AI機能の拡張
   - Module LLM（M5Stackの拡張モジュール）によるAI会話機能の完全ローカル化
diff --git a/README_en.md b/README_en.md
index 0cc118b..eff5868 100644
--- a/README_en.md
+++ b/README_en.md
@@ -1,6 +1,8 @@
 [日本語](README.md)
 
 # AI Stack-chan Ex
+[![PlatformIO CI](https://github.com/ronron-gh/AI_StackChan_Ex/actions/workflows/platformio-ci.yml/badge.svg)](https://github.com/ronron-gh/AI_StackChan_Ex/actions/workflows/platformio-ci.yml)
+
 Based on robo8080's [AI Stack-chan](https://github.com/robo8080/AI_StackChan2), we have added the following functions.  
 - Expanding AI capabilities
   - Full localization of AI conversation functions using Module LLM (an expansion module for M5Stack)
diff --git a/firmware/src/mod/QRdisplay/QRdisplayMod.h b/firmware/src/mod/QRdisplay/QRdisplayMod.h
index bc1d396..cac39c5 100644
--- a/firmware/src/mod/QRdisplay/QRdisplayMod.h
+++ b/firmware/src/mod/QRdisplay/QRdisplayMod.h
@@ -1,7 +1,7 @@
 #ifndef _QR_DISPLAY_MOD_H
 #define _QR_DISPLAY_MOD_H
 
-#include <arduino.h>
+#include <Arduino.h>
 #include "mod/ModBase.h"
 
 
diff --git a/firmware/src/share/Version.h b/firmware/src/share/Version.h
index c5feb83..0b242b6 100644
--- a/firmware/src/share/Version.h
+++ b/firmware/src/share/Version.h
@@ -1,6 +1,6 @@
 #ifndef _VERSION_H
 #define _VERSION_H
 
-#define FW_VERSION  "0.22.0"
+#define FW_VERSION  "0.22.1"
 
 #endif
\ No newline at end of file