diff --git a/.github/workflows/nightly-build.yml b/.github/workflows/nightly-build.yml
index de79fecf..c6137703 100644
--- a/.github/workflows/nightly-build.yml
+++ b/.github/workflows/nightly-build.yml
@@ -1,6 +1,7 @@
 name: Nightly Build
 
 on:
+  workflow_dispatch:
   schedule:
     - cron: "00 00 * * *"
 
@@ -10,16 +11,29 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
+      - name: Checkout latest tag
+        run: |
+          echo checking out $(git describe --tags)
+          git checkout $(git describe --tags)
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
           python-version: '3.x'
-      - name: Set up environment
+      - name: Remove necessary directories
         run: |
           rm -rf PyPDFForm
+          rm -rf pdf_samples
+      - name: Re-checkout latest samples
+        uses: actions/checkout@v4
+        with:
+          sparse-checkout: |
+            pdf_samples
+      - name: Set up environment
+        run: |
           python -m pip install --upgrade pip
           pip install PyPDFForm
           pip install -r requirements.txt
+          ls
       - name: Run nightly tests
         run: |
           pytest