diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 7b51575..b1622c1 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -6,7 +6,7 @@ jobs:
   shellcheck:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: shellcheck
         uses: ludeeus/action-shellcheck@1.1.0
         env:
@@ -15,7 +15,7 @@ jobs:
   shfmt:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v2.3.4
       - name: shfmt
         uses: bltavares/actions/shfmt@master
         env: