diff --git a/.github/workflows/checkin.yml b/.github/workflows/checkin.yml
index fe74feb..239be13 100644
--- a/.github/workflows/checkin.yml
+++ b/.github/workflows/checkin.yml
@@ -8,7 +8,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js
         uses: actions/setup-node@v3
         with:
diff --git a/.github/workflows/manual-detached-test.yml b/.github/workflows/manual-detached-test.yml
index 50751ce..d4f37de 100644
--- a/.github/workflows/manual-detached-test.yml
+++ b/.github/workflows/manual-detached-test.yml
@@ -5,7 +5,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./
         with:
           limit-access-to-actor: true
diff --git a/.github/workflows/manual-test.yml b/.github/workflows/manual-test.yml
index bf1b27b..eaa876c 100644
--- a/.github/workflows/manual-test.yml
+++ b/.github/workflows/manual-test.yml
@@ -18,7 +18,7 @@ jobs:
           - false
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./
         with:
           limit-access-to-actor: ${{ matrix.limit-access-to-actor }}
@@ -37,7 +37,7 @@ jobs:
     container:
       image: ${{ matrix.container-runs-on }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ./
         with:
           limit-access-to-actor: ${{ matrix.limit-access-to-actor }}
diff --git a/README.md b/README.md
index e6719de..b63ac9d 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
 ```
@@ -85,7 +85,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
       with:
@@ -105,7 +105,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
       with:
@@ -123,7 +123,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
       timeout-minutes: 15
@@ -142,7 +142,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       if: ${{ failure() }}
       uses: mxschmitt/action-tmate@v3
@@ -162,7 +162,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
       with:
@@ -182,7 +182,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Setup tmate session
       uses: mxschmitt/action-tmate@v3
       with: