diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 336e731..9662520 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -21,7 +21,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
             - name: Install
               uses: ./.github/actions/install
               with:
@@ -32,7 +32,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout
-              uses: actions/checkout@v3
+              uses: actions/checkout@v4
             - name: Install
               uses: ./.github/actions/install
               with:
@@ -46,7 +46,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             -   name: Checkout
-                uses: actions/checkout@v3
+                uses: actions/checkout@v4
 
             -   name: Install
                 uses: ./.github/actions/install
@@ -65,7 +65,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             -   name: Checkout
-                uses: actions/checkout@v3
+                uses: actions/checkout@v4
                 with:
                     fetch-depth: 0