diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a38787..1635d3e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     env:
       DEVELOPER_DIR: /Applications/Xcode_15.0.1.app
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Test
         run: xcodebuild test -scheme "Zen Tuner" -destination platform="iOS Simulator,name=iPhone 15 Pro Max,OS=17.0.1"
   test_packages:
@@ -22,7 +22,7 @@ jobs:
     env:
       DEVELOPER_DIR: /Applications/Xcode_15.0.1.app
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Test
         run: swift test --package-path Packages/MicrophonePitchDetector
   macos:
@@ -30,7 +30,7 @@ jobs:
     env:
       DEVELOPER_DIR: /Applications/Xcode_15.0.1.app
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build macOS
         run: xcodebuild build -scheme "Zen Tuner" CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
   watchos:
@@ -38,7 +38,7 @@ jobs:
     env:
       DEVELOPER_DIR: /Applications/Xcode_15.0.1.app
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build watchOS
         run: xcodebuild build -scheme "ZenTuner_watchOS" CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO
   lint:
@@ -46,6 +46,6 @@ jobs:
     container:
       image: ghcr.io/realm/swiftlint:0.53.0
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Run SwiftLint
         run: swiftlint lint --strict