diff --git a/.github/workflows/tlc.yml b/.github/workflows/tlc.yml
index 5400c3d..65d3ec9 100644
--- a/.github/workflows/tlc.yml
+++ b/.github/workflows/tlc.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0   # we need history to switch/create branches