diff --git a/README.md b/README.md
index a73ac87d..3fda4330 100644
--- a/README.md
+++ b/README.md
@@ -103,7 +103,7 @@ jobs:
       # comments (to avoid publishing multiple comments in the same PR)
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install everything, run the tests, produce the .coverage file
         run: make test # This is the part where you put your own test command
@@ -192,7 +192,7 @@ jobs:
       # comments (to avoid publishing multiple comments in the same PR)
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install everything, run the tests, produce the .coverage file
         run: make test # This is the part where you put your own test command
@@ -236,7 +236,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Set up Python
         id: setup-python
@@ -267,7 +267,7 @@ jobs:
       pull-requests: write
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions/download-artifact@v3
         id: download
diff --git a/tests/end_to_end/repo/.github/workflows/ci.yml b/tests/end_to_end/repo/.github/workflows/ci.yml
index 5d64e222..3bfce29f 100644
--- a/tests/end_to_end/repo/.github/workflows/ci.yml
+++ b/tests/end_to_end/repo/.github/workflows/ci.yml
@@ -17,7 +17,7 @@ jobs:
       pull-requests: write
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Install poetry
         run: pipx install poetry