diff --git a/.github/workflows/build_and_push.yml b/.github/workflows/build_and_push.yml
index 86f2601..b5540c5 100644
--- a/.github/workflows/build_and_push.yml
+++ b/.github/workflows/build_and_push.yml
@@ -13,7 +13,7 @@ jobs:
     name: Build and publish image
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Build and push
         uses: docker/build-push-action@v5.0.0
         with:
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 2815407..1718c57 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -10,7 +10,7 @@ jobs:
       UML_FILES: "**.wsd"
       OUTPUT_DIR: "docs"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 1
       - name: Make sure output directory exists
diff --git a/.github/workflows/test-pr.yml b/.github/workflows/test-pr.yml
index d76d8f1..551ff62 100644
--- a/.github/workflows/test-pr.yml
+++ b/.github/workflows/test-pr.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Set up Elixir
         uses: erlef/setup-beam@v1
         with: