diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5b8886e..e0ac9af 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-    - uses: actions/checkout@v5
+    - uses: actions/checkout@v6
 
     - uses: coursier/cache-action@v7
 
@@ -54,7 +54,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps: 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       
       - name: Download PDF
         uses: actions/download-artifact@v6