diff --git a/.github/workflows/selftest.yml b/.github/workflows/selftest.yml
index f3466a6..2eb9bff 100644
--- a/.github/workflows/selftest.yml
+++ b/.github/workflows/selftest.yml
@@ -15,7 +15,7 @@ jobs:
   test-self:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE version
       uses: ./
       with:
@@ -33,7 +33,7 @@ jobs:
   test-majorversion:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE Compliance Check
       uses: fsfe/reuse-action@v2
       with:
diff --git a/README.md b/README.md
index ab986b2..8643af3 100644
--- a/README.md
+++ b/README.md
@@ -39,7 +39,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE Compliance Check
       uses: fsfe/reuse-action@v2
 ```
@@ -47,7 +47,7 @@ jobs:
 If you would like to run other subcommands, you could use the following snippet which outputs a the SPDX bill of materials:
 
 ```yml
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE SPDX SBOM
       uses: fsfe/reuse-action@v2
       with:
@@ -57,7 +57,7 @@ If you would like to run other subcommands, you could use the following snippet
 In the same fashion, it is possible to add optional arguments like `--include-submodules`:
 
 ```yml
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: REUSE Compliance Check
       uses: fsfe/reuse-action@v2
       with: