diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index 7d2a185..411c702 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -21,9 +21,9 @@ jobs:
         - v7.3
     steps:
     - name: Checkout code
-      uses: actions/checkout@main
+      uses: actions/checkout@v2
     - name: Checkout vim-themis
-      uses: actions/checkout@main
+      uses: actions/checkout@v2
       with:
         repository: thinca/vim-themis
         path: vim-themis