diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 769ce8d1..65c2a9dd 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -14,7 +14,7 @@ jobs:
     steps:
 
     - name: Check out sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v3
diff --git a/.github/workflows/docs.yaml b/.github/workflows/docs.yaml
index 7fce44fc..bf5ec72b 100644
--- a/.github/workflows/docs.yaml
+++ b/.github/workflows/docs.yaml
@@ -14,7 +14,7 @@ jobs:
     steps:
 
     - name: Check out sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v3
diff --git a/.github/workflows/milestone.yaml b/.github/workflows/milestone.yaml
index ac97d2de..484c6eb4 100644
--- a/.github/workflows/milestone.yaml
+++ b/.github/workflows/milestone.yaml
@@ -12,7 +12,7 @@ jobs:
     steps:
 
     - name: Check out sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v3
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 854c97fd..9f1152bf 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -12,7 +12,7 @@ jobs:
     steps:
 
     - name: Check out sources
-      uses: actions/checkout@v2
+      uses: actions/checkout@v4
 
     - name: Set up JDK 17
       uses: actions/setup-java@v3