diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
deleted file mode 100644
index 1ca0c94..0000000
--- a/.github/workflows/main.yml
+++ /dev/null
@@ -1,51 +0,0 @@
-name: build
-
-on:
-  push:
-    branches: [ master ]
-  pull_request:
-    branches: [ master ]
-
-jobs:
-  test:
-    name: Tests
-    strategy:
-      matrix:
-        os: [ubuntu-latest, macOS-latest, windows-latest]
-    runs-on: ${{ matrix.os }}
-    steps:
-      - uses: actions/checkout@v3
-      - name: JDK 1.8
-        uses: actions/setup-java@v3
-        with:
-          java-version: 1.8
-      - name: Test
-        run: mvn clean test --errors --batch-mode
-      - name: CodeCov
-        uses: codecov/codecov-action@v3.1.1
-        if: matrix.os == 'ubuntu-latest'
-        timeout-minutes: 10
-        with:
-          file: target/coverage/jacoco.xml
-
-  lint:
-    name: Linters
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-      - name: Ruby 2.7
-        uses: actions/setup-ruby@v1
-        with:
-          ruby-version: 2.7
-      - name: Install pdd, xcop
-        run: |
-          gem install pdd
-          gem install xcop
-      - name: JDK 1.8
-        uses: actions/setup-java@v3
-        with:
-          java-version: 1.8
-      - name: Puzzles
-        run: pdd --file=/dev/null
-      - name: Qulice
-        run: mvn -P qulice clean install -DskipTests=true --errors --batch-mode