diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8fbeaf5..d1752f6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -19,7 +19,7 @@ jobs:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           version: "latest"
@@ -46,7 +46,7 @@ jobs:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           version: "latest"
@@ -77,7 +77,7 @@ jobs:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           version: "latest"
@@ -97,7 +97,7 @@ jobs:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: astral-sh/setup-uv@v5
         with:
           version: "latest"
@@ -131,7 +131,7 @@ jobs:
       run:
         working-directory: frontend
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v4
         with:
           node-version: "20"
@@ -154,7 +154,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: [backend-lint, backend-test, frontend]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: docker/setup-buildx-action@v3
       - name: Build backend image
         uses: docker/build-push-action@v7
@@ -171,7 +171,7 @@ jobs:
     permissions:
       security-events: write
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: github/codeql-action/init@v3
         with:
           languages: python, javascript