diff --git a/.github/workflows/shellcheck.yml b/.github/workflows/shellcheck.yml
index f5fb796..62ae1f1 100644
--- a/.github/workflows/shellcheck.yml
+++ b/.github/workflows/shellcheck.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       # ShellCheck is preinstalled on ubuntu-latest runners.
       # zsh/ is excluded: ShellCheck does not support the zsh dialect.
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install zsh
         run: sudo apt-get update && sudo apt-get install -y --no-install-recommends zsh