diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index b6e6db6..26e9415 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -1,5 +1,4 @@
 name: CI
-
 on:
   push:
     branches:
@@ -7,10 +6,21 @@ on:
   pull_request:
     branches:
       - master
-
 jobs:
+  clang-format:
+    name: Check clang-format
+    runs-on: ubuntu-latest
+    container: archlinux:latest
+    steps:
+      - name: Install dependencies
+        run: |
+          pacman -Syu --noconfirm git clang diffutils
+          git config --global --add safe.directory $GITHUB_WORKSPACE
+      - uses: actions/checkout@v4
+      - uses: fcitx/github-actions@clang-format
   check:
     name: Build and test
+    needs: clang-format
     runs-on: ubuntu-latest
     container: archlinux:latest
     strategy:
@@ -37,20 +47,15 @@ jobs:
         uses: actions/cache@v4
         with:
           path: 'fcitx5/**/*.tar.*'
-          key: ${{ runner.os }}-${{ hashFiles('fcitx5/src/modules/spell/CMakeLists.txt') }}
+          key: ${{ runner.os }}-${{ hashFiles('fcitx5/src/modules/spell/CMakeLists.txt')
+            }}
       - name: Build and Install fcitx5
         uses: fcitx/github-actions@cmake
         with:
           path: fcitx5
           cmake-option: >-
-            -DENABLE_KEYBOARD=Off
-            -DENABLE_X11=Off
-            -DENABLE_WAYLAND=Off
-            -DENABLE_ENCHANT=Off
-            -DENABLE_DBUS=Off
-            -DENABLE_SERVER=Off
-            -DENABLE_EMOJI=Off
-            -DUSE_SYSTEMD=Off
+            -DENABLE_KEYBOARD=Off -DENABLE_X11=Off -DENABLE_WAYLAND=Off -DENABLE_ENCHANT=Off
+            -DENABLE_DBUS=Off -DENABLE_SERVER=Off -DENABLE_EMOJI=Off -DUSE_SYSTEMD=Off
       - uses: actions/checkout@v4
         with:
           repository: fcitx/fcitx5-qt
@@ -61,9 +66,7 @@ jobs:
           repository: fcitx/fcitx5-qt
           path: fcitx5-qt
           cmake-option: >-
-            -DENABLE_QT4=Off
-            -DENABLE_QT5=Off
-            -DENABLE_QT6=On
+            -DENABLE_QT4=Off -DENABLE_QT5=Off -DENABLE_QT6=On
       - uses: actions/checkout@v4
         with:
           repository: naokiri/cskk
@@ -78,9 +81,7 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
       - name: Build and install cskk
         shell: bash
-        run: |
-            cd cskk
-            cargo cinstall --release --prefix=/usr          
+        run: "cd cskk\ncargo cinstall --release --prefix=/usr          \n"
       - uses: actions/checkout@v4
         with:
           path: fcitx5-cskk
@@ -94,8 +95,7 @@ jobs:
         with:
           path: fcitx5-cskk
           cmake-option: >-
-            -DENABLE_QT=On
-            -DUSE_QT6=On
+            -DENABLE_QT=On -DUSE_QT6=On
       - name: Test
         run: |
           ctest --test-dir fcitx5-cskk/build
diff --git a/gui/adddictdialog.h b/gui/adddictdialog.h
index 24dd0d1..8e046e6 100644
--- a/gui/adddictdialog.h
+++ b/gui/adddictdialog.h
@@ -1,6 +1,6 @@
 /*
- * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki Iwakiri
- * <naokiri@gmail.com></text>
+ * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki
+ * Iwakiri <naokiri@gmail.com></text>
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
  *
diff --git a/gui/dictmodel.h b/gui/dictmodel.h
index 7d6ee9d..3d3fb49 100644
--- a/gui/dictmodel.h
+++ b/gui/dictmodel.h
@@ -1,6 +1,6 @@
 /*
- * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki Iwakiri
- * <naokiri@gmail.com></text>
+ * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki
+ * Iwakiri <naokiri@gmail.com></text>
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
  *
diff --git a/gui/dictwidget.h b/gui/dictwidget.h
index 8ec50bf..d6ff429 100644
--- a/gui/dictwidget.h
+++ b/gui/dictwidget.h
@@ -1,6 +1,6 @@
 /*
- * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki Iwakiri
- * <naokiri@gmail.com></text>
+ * SPDX-FileCopyrightText: <text>2013~2022 CSSlayer <wengxt@gmail.com>, Naoaki
+ * Iwakiri <naokiri@gmail.com></text>
  *
  * SPDX-License-Identifier: GPL-3.0-or-later
  *
diff --git a/gui/main.h b/gui/main.h
index 9afd4d6..baf60f1 100644
--- a/gui/main.h
+++ b/gui/main.h
@@ -13,12 +13,12 @@
 namespace fcitx {
 
 class CskkConfigPlugin : public FcitxQtConfigUIPlugin {
-    Q_OBJECT
+  Q_OBJECT
 public:
-    Q_PLUGIN_METADATA(IID FcitxQtConfigUIFactoryInterface_iid FILE
-                      "cskk-config.json")
-    explicit CskkConfigPlugin(QObject *parent = 0);
-    FcitxQtConfigUIWidget *create(const QString &key) override;
+  Q_PLUGIN_METADATA(IID FcitxQtConfigUIFactoryInterface_iid FILE
+                    "cskk-config.json")
+  explicit CskkConfigPlugin(QObject *parent = 0);
+  FcitxQtConfigUIWidget *create(const QString &key) override;
 };
 
 } // namespace fcitx
diff --git a/test/basic_test.cpp b/test/basic_test.cpp
index 3f1475b..ef1d16e 100644
--- a/test/basic_test.cpp
+++ b/test/basic_test.cpp
@@ -1,7 +1,8 @@
 /*
  * Copyright (c) 2021 Naoaki Iwakiri
  * This program is released under GNU General Public License version 3 or later
- * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
  *
  * Creation Date: 2021-05-08
  *
diff --git a/test/main.cpp b/test/main.cpp
index 328176e..6e427d7 100644
--- a/test/main.cpp
+++ b/test/main.cpp
@@ -1,7 +1,8 @@
 /*
  * Copyright (c) 2021 Naoaki Iwakiri
  * This program is released under GNU General Public License version 3 or later
- * You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>.
+ * You should have received a copy of the GNU General Public License along with
+ * this program. If not, see <https://www.gnu.org/licenses/>.
  *
  * Creation Date: 2021-05-08
  *
@@ -13,8 +14,7 @@
 
 #include "gtest/gtest.h"
 
-int main(int argc, char** argv) {
+int main(int argc, char **argv) {
   ::testing::InitGoogleTest(&argc, argv);
   return RUN_ALL_TESTS();
 }
-