diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 26ac4cfa..15c88cee 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
         with:
           java-version: '11'
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index c0cb98f6..3e207b6f 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -28,7 +28,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
diff --git a/.github/workflows/generate-uml.yml b/.github/workflows/generate-uml.yml
index 3ccf0644..acbefd01 100644
--- a/.github/workflows/generate-uml.yml
+++ b/.github/workflows/generate-uml.yml
@@ -8,7 +8,7 @@ jobs:
   generate_plantuml:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ts-graphviz/setup-graphviz@v1
       - run: curl -LJ https://github.com/plantuml/plantuml/releases/download/v1.2022.7/plantuml-1.2022.7.jar -o plantuml.jar
       - run: java -jar plantuml.jar -v -tpng -r design/plantuml/**.puml -o ../../static/images