diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 367db28..625d815 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       # uv bundles its own Python; pinning the uv version keeps CI
       # reproducible across ubuntu-latest image updates.
@@ -63,7 +63,7 @@ jobs:
       run:
         working-directory: frontend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
 
       - uses: actions/setup-node@v4
         with: