diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 6df64a3..da4f204 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -19,7 +19,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Java
@@ -43,7 +43,7 @@ jobs:
         scala: ['2.13.10', '3.2.2']
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Java
@@ -68,7 +68,7 @@ jobs:
         platform: ['JVM']
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Java
@@ -94,7 +94,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
       - name: Setup Java
         uses: actions/setup-java@v3.11.0
         with:
@@ -118,7 +118,7 @@ jobs:
     timeout-minutes: 60
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
       - name: Setup Java
         uses: actions/setup-java@v3.11.0
         with:
@@ -148,7 +148,7 @@ jobs:
     if: github.event_name != 'pull_request'
     steps:
       - name: Checkout current branch
-        uses: actions/checkout@v3.3.0
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - name: Setup Java
diff --git a/.github/workflows/publishwebsite.yaml b/.github/workflows/publishwebsite.yaml
index 4261259..2b8f783 100644
--- a/.github/workflows/publishwebsite.yaml
+++ b/.github/workflows/publishwebsite.yaml
@@ -12,7 +12,7 @@ jobs:
     name: Deploy to GitHub Pages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-node@v3
         with:
           node-version: 18
diff --git a/.github/workflows/semgrep.yml b/.github/workflows/semgrep.yml
index d4c0cb4..9e347be 100644
--- a/.github/workflows/semgrep.yml
+++ b/.github/workflows/semgrep.yml
@@ -19,5 +19,5 @@ jobs:
     container:
       image: returntocorp/semgrep
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - run: semgrep ci