diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 084b97c..b9d6e84 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,9 +25,9 @@ jobs:
             version: v7.4.1516
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           repository: thinca/vim-themis
           path: vim-themis
@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: reviewdog/action-vint@v1
         with: