diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index db2fee2..fc77829 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Setup Python
         uses: actions/setup-python@v5
@@ -92,7 +92,7 @@ jobs:
           install: true
 
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       # We ask Docker to use GitHub Action's native caching support to speed up
       # the build, per https://docs.docker.com/build/cache/backends/gha/.
@@ -131,7 +131,7 @@ jobs:
       - build
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Download Single-Platform Packages
         uses: actions/download-artifact@v5