diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index bec3e84a5..3f8ed4521 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,7 @@ jobs:
       - name: Prepare Git
         # Windows corrupts line endings on checkout, causing test failures.
         run: git config --global core.autocrlf false
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
           ini-file: development
@@ -80,7 +80,7 @@ jobs:
     permissions:
       contents: write
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
           coverage: none
diff --git a/.github/workflows/mutation.yml b/.github/workflows/mutation.yml
index 268a0e85e..e7e2cb1b8 100644
--- a/.github/workflows/mutation.yml
+++ b/.github/workflows/mutation.yml
@@ -14,7 +14,7 @@ jobs:
     name: Mutation Testing
     steps:
       - name: Checkout code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index b4d1a9583..2f7d953b0 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-22.04
     name: Create a CCB ticket in Jira
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: shivammathur/setup-php@v2
         with:
           coverage: none