diff --git a/.nojekyll b/.nojekyll
index 3182335..485b0c8 100644
--- a/.nojekyll
+++ b/.nojekyll
@@ -1 +1 @@
-a111c6c2
\ No newline at end of file
+2bb9be8a
\ No newline at end of file
diff --git a/index.html b/index.html
index 47fdf93..4d5b21c 100644
--- a/index.html
+++ b/index.html
@@ -237,7 +237,6 @@ pre > code.sourceCode > span > a:first-child::before { text-decoration: underlin
   <li><a href="#the-labs" id="toc-the-labs" class="nav-link" data-scroll-target="#the-labs">The labs</a></li>
   <li><a href="#what-youll-build" id="toc-what-youll-build" class="nav-link" data-scroll-target="#what-youll-build">What you’ll build</a></li>
   <li><a href="#adopting-these-labs" id="toc-adopting-these-labs" class="nav-link" data-scroll-target="#adopting-these-labs">Adopting these labs</a></li>
-  <li><a href="#acknowledgements" id="toc-acknowledgements" class="nav-link" data-scroll-target="#acknowledgements">Acknowledgements</a></li>
   <li><a href="#license" id="toc-license" class="nav-link" data-scroll-target="#license">License</a></li>
   <li><a href="#source-and-pdfs" id="toc-source-and-pdfs" class="nav-link" data-scroll-target="#source-and-pdfs">Source and PDFs</a></li>
   <li><a href="#citing" id="toc-citing" class="nav-link" data-scroll-target="#citing">Citing</a></li>
@@ -311,13 +310,8 @@ pre > code.sourceCode > span > a:first-child::before { text-decoration: underlin
 <h2 class="anchored" data-anchor-id="adopting-these-labs">Adopting these labs</h2>
 <p>Free to adopt under the licenses below. If you’d like on-site delivery, customization, or instructor materials built on top of these labs, <a href="https://such.software">such.software</a> — an independent provider co-founded by one of the authors — offers commercial services. Email <a href="mailto:john@such.software">john@such.software</a>.</p>
 </section>
-<section id="acknowledgements" class="level2">
-<h2 class="anchored" data-anchor-id="acknowledgements">Acknowledgements</h2>
-<p>With support from Kayla Ross, Veronica Dougherty, and Cecil College.</p>
-</section>
 <section id="license" class="level2">
 <h2 class="anchored" data-anchor-id="license">License</h2>
-<p>Copyright © 2026 John Murphy, Steven Carlson, and Cecil College.</p>
 <p>The labs are openly licensed:</p>
 <ul>
 <li><strong>Code</strong> (Python, C++, scripts, Quarto config) — <a href="https://github.com/jwinterm/geant4-radiation-labs/blob/main/LICENSE">MIT License</a></li>
diff --git a/search.json b/search.json
index 10cf085..b788baa 100644
--- a/search.json
+++ b/search.json
@@ -497,23 +497,12 @@
       "Introduction"
     ]
   },
-  {
-    "objectID": "index.html#acknowledgements",
-    "href": "index.html#acknowledgements",
-    "title": "Geant4 Radiation Labs",
-    "section": "Acknowledgements",
-    "text": "Acknowledgements\nWith support from Kayla Ross, Veronica Dougherty, and Cecil College.",
-    "crumbs": [
-      "Home",
-      "Introduction"
-    ]
-  },
   {
     "objectID": "index.html#license",
     "href": "index.html#license",
     "title": "Geant4 Radiation Labs",
     "section": "License",
-    "text": "License\nCopyright © 2026 John Murphy, Steven Carlson, and Cecil College.\nThe labs are openly licensed:\n\nCode (Python, C++, scripts, Quarto config) — MIT License\nContent (prose, diagrams, screenshots) — CC-BY-4.0\n\nUse, adapt, and redistribute freely with attribution to the authors and Cecil College.",
+    "text": "License\nThe labs are openly licensed:\n\nCode (Python, C++, scripts, Quarto config) — MIT License\nContent (prose, diagrams, screenshots) — CC-BY-4.0\n\nUse, adapt, and redistribute freely with attribution to the authors and Cecil College.",
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diff --git a/sitemap.xml b/sitemap.xml
index 06aa13a..d971dde 100644
--- a/sitemap.xml
+++ b/sitemap.xml
@@ -10,7 +10,7 @@
   </url>
   <url>
     <loc>https://jwinterm.github.io/geant4-radiation-labs/index.html</loc>
-    <lastmod>2026-04-28T00:45:27.540Z</lastmod>
+    <lastmod>2026-04-29T20:49:07.195Z</lastmod>
   </url>
   <url>
     <loc>https://jwinterm.github.io/geant4-radiation-labs/lab1_setup/lab1.html</loc>