diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index d6f8837..ffcf044 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -38,7 +38,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 3e3b3fb..9347259 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with:
@@ -40,7 +40,7 @@ jobs:
     name: "Deploy Project (Central)"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with:
diff --git a/.github/workflows/javadoc.yml b/.github/workflows/javadoc.yml
index 2f9076d..6366250 100644
--- a/.github/workflows/javadoc.yml
+++ b/.github/workflows/javadoc.yml
@@ -14,7 +14,7 @@ jobs:
     name: "Deploy Javadoc (Github Pages)"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with:
diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 67eb6d1..a1c320f 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: "Set up JDK"
         uses: actions/setup-java@v4
         with: