diff --git a/.github/workflows/bulk-import.yaml b/.github/workflows/bulk-import.yaml
index a85ed23..09ea8dd 100644
--- a/.github/workflows/bulk-import.yaml
+++ b/.github/workflows/bulk-import.yaml
@@ -30,7 +30,7 @@ jobs:
           owner: ${{ github.repository_owner }}
 
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}
diff --git a/.github/workflows/drift-check.yaml b/.github/workflows/drift-check.yaml
index 43ced96..868942b 100644
--- a/.github/workflows/drift-check.yaml
+++ b/.github/workflows/drift-check.yaml
@@ -24,7 +24,7 @@ jobs:
     environment: schedule
     steps:
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}
diff --git a/.github/workflows/import.yaml b/.github/workflows/import.yaml
index d7f6b61..8dd196c 100644
--- a/.github/workflows/import.yaml
+++ b/.github/workflows/import.yaml
@@ -35,7 +35,7 @@ jobs:
           owner: ${{ github.repository_owner }}
 
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}
diff --git a/.github/workflows/promote-imported-configs.yaml b/.github/workflows/promote-imported-configs.yaml
index 458cc0e..3384597 100644
--- a/.github/workflows/promote-imported-configs.yaml
+++ b/.github/workflows/promote-imported-configs.yaml
@@ -42,7 +42,7 @@ jobs:
           owner: ${{ github.repository_owner }}
 
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}
diff --git a/.github/workflows/tf-apply.yaml b/.github/workflows/tf-apply.yaml
index a1cd368..525f7f4 100644
--- a/.github/workflows/tf-apply.yaml
+++ b/.github/workflows/tf-apply.yaml
@@ -31,7 +31,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}
diff --git a/.github/workflows/tf-plan.yaml b/.github/workflows/tf-plan.yaml
index 83fb82a..ceac90d 100644
--- a/.github/workflows/tf-plan.yaml
+++ b/.github/workflows/tf-plan.yaml
@@ -63,7 +63,7 @@ jobs:
               });
 
       - name: Checkout GCSS
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: G-Research/github-terraformer
           ref: ${{ inputs.gcss_ref }}