diff --git a/.github/workflows/regenerate.yml b/.github/workflows/regenerate.yml
index 7a9bce1..4680770 100644
--- a/.github/workflows/regenerate.yml
+++ b/.github/workflows/regenerate.yml
@@ -21,7 +21,7 @@ on:
         type: boolean
         default: false
       ref:
-        description: A branch of the template to generate the preview branch from, for a pull request under review; empty for the daily check
+        description: A branch of the template to generate the preview branches from, for a pull request under review; empty for the daily check
         type: string
         default: ''
 
@@ -46,10 +46,10 @@ jobs:
           FORCE: ${{ inputs.force }}
           PREVIEW_REF: ${{ inputs.ref }}
         run: |
-          # A pull request of the template under review: only the preview branch, from its branch.
+          # A pull request of the template under review: only the preview branches, from its branch.
           if [ -n "$PREVIEW_REF" ]; then
             echo "tag=$PREVIEW_REF" >> "$GITHUB_OUTPUT"
-            echo "branches=$(jq -cn --arg f "$PREVIEW_REF" '[{branch: "preview", from: $f}]')" >> "$GITHUB_OUTPUT"
+            echo "branches=$(jq -c --arg f "$PREVIEW_REF" '[.[] | select(.onDemand == true) | {branch, from: $f}]' .samples/variants.json)" >> "$GITHUB_OUTPUT"
             echo "regenerate=true" >> "$GITHUB_OUTPUT"
             exit 0
           fi
diff --git a/.samples/variants.json b/.samples/variants.json
index 2d670ac..30ea5dd 100644
--- a/.samples/variants.json
+++ b/.samples/variants.json
@@ -43,5 +43,15 @@
       "-N ST -P DotNetSolutionKit.Samples -S Billing --Messaging outbox -I true --DiffApi true --FeatureFlags true --Storage true --ClickHouse true",
       "-N ST -P DotNetSolutionKit.Samples -S Gateway --ApiGateway true"
     ]
+  },
+  {
+    "branch": "preview-vault",
+    "ref": "master",
+    "onDemand": true,
+    "about": "Secrets from HashiCorp Vault instead of Infisical, with the bus, the audit journal and the API diff; generated on demand with preview, from the branch of the template under review.",
+    "generate": [
+      "-N ST -P DotNetSolutionKit.Samples -S Orders -M false --GitHubCiCd true --Vault true --Messaging outbox --Audit true --DiffApi true",
+      "-N ST -P DotNetSolutionKit.Samples -S Billing --Vault true --Messaging outbox --Audit true --DiffApi true"
+    ]
   }
 ]