diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index ead2324..8347f8d 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -25,8 +25,8 @@ jobs:
           - false
     runs-on: ${{ matrix.runs-on }}
     steps:
-      - uses: actions/checkout@v3
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+      - uses: actions/checkout@v4
         with:
           repository: thinca/vim-themis
           path: vim-themis