diff --git a/.github/workflows/validate.yml b/.github/workflows/validate.yml
index b7e02ef..5298c4f 100644
--- a/.github/workflows/validate.yml
+++ b/.github/workflows/validate.yml
@@ -12,7 +12,7 @@ jobs:
       contents: read
     steps:
       - name: git checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - uses: DeterminateSystems/determinate-nix-action@v3
       - uses: DeterminateSystems/flakehub-cache-action@main
       - run: nix develop -c action-validator -v ./.github/workflows/workflow.yml
diff --git a/.github/workflows/workflow.yml b/.github/workflows/workflow.yml
index e448815..d8b7611 100644
--- a/.github/workflows/workflow.yml
+++ b/.github/workflows/workflow.yml
@@ -97,7 +97,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       # disabled pending strategy discussion on exposing tunables
       # - uses: Determinatesystems/flake-checker-action@main
       - uses: DeterminateSystems/determinate-nix-action@v3
@@ -127,7 +127,7 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: DeterminateSystems/determinate-nix-action@v3
         with:
           extra-conf: |