diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 9b89c51..efea7a3 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: "ubuntu-22.04"
     steps:
       - name: Check out source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
@@ -25,7 +25,7 @@ jobs:
     runs-on: "ubuntu-22.04"
     steps:
       - name: Check out source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
 
@@ -40,7 +40,7 @@ jobs:
     runs-on: "ubuntu-22.04"
     steps:
       - name: Check out source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}