diff --git a/01-intro-to-rnaseq.html b/01-intro-to-rnaseq.html
index 3ed64d0b..3687d5a6 100644
--- a/01-intro-to-rnaseq.html
+++ b/01-intro-to-rnaseq.html
@@ -647,7 +647,7 @@ <h3 class="callout-title">Key Points</h3>
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diff --git a/02-setup.html b/02-setup.html
index a0979d98..bd6889bf 100644
--- a/02-setup.html
+++ b/02-setup.html
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diff --git a/03-import-annotate.html b/03-import-annotate.html
index d196dfa4..11bcded0 100644
--- a/03-import-annotate.html
+++ b/03-import-annotate.html
@@ -514,7 +514,7 @@ <h3 class="callout-title">Challenge: Discuss the following points with your neig
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li>In <code>counts</code>, the rows are genes just like the rows in
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@@ -632,7 +632,7 @@ <h3 class="callout-title">Challenge</h3>
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-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
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 <div class="codewrapper sourceCode" id="cb19">
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@@ -1008,7 +1008,7 @@ <h3 class="callout-title">Challenge</h3>
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   <h4 class="accordion-header" id="headingSolution3"> Show me the solution </h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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@@ -1132,7 +1132,7 @@ <h3 class="callout-title">Challenge: How to subset to mRNA genes</h3>
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diff --git a/04-exploratory-qc.html b/04-exploratory-qc.html
index 0c3cd687..d0df696a 100644
--- a/04-exploratory-qc.html
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@@ -410,7 +410,7 @@ <h3 class="callout-title">Challenge: What kind of genes survived this filtering?
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   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
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 <div class="accordion-body">
 <ol style="list-style-type: decimal"><li><p>The major signal in this data (37% variance) is associated with
 sex. As we are not interested in sex-specific changes over time, we need
@@ -719,7 +719,7 @@ <h3 class="callout-title">Challenge: Plot the PCA colored by library sizes.</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
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@@ -958,7 +958,7 @@ <h3 class="callout-title">Key Points</h3>
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diff --git a/05-differential-expression.html b/05-differential-expression.html
index 5dc12f93..372a266a 100644
--- a/05-differential-expression.html
+++ b/05-differential-expression.html
@@ -573,7 +573,7 @@ <h3 class="callout-title">Challenge</h3>
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-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
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 <div class="accordion-body">
 <p>In the lesson example the last variable of the design formula is
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@@ -677,7 +677,7 @@ <h3 class="callout-title">Challenge</h3>
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@@ -1005,7 +1005,7 @@ <h3 class="callout-title">Key Points</h3>
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diff --git a/06-extra-design.html b/06-extra-design.html
index 2a4fbe3d..742ed0b5 100644
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@@ -646,7 +646,7 @@ <h3 class="callout-title">Challenge</h3>
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@@ -1980,7 +1980,7 @@ <h3 class="callout-title">Key Points</h3>
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diff --git a/07-gene-set-analysis.html b/07-gene-set-analysis.html
index 534ed020..93c47447 100644
--- a/07-gene-set-analysis.html
+++ b/07-gene-set-analysis.html
@@ -2648,7 +2648,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2020-09-15",
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diff --git a/08-next-steps.html b/08-next-steps.html
index 592d3075..04fcd69c 100644
--- a/08-next-steps.html
+++ b/08-next-steps.html
@@ -425,7 +425,7 @@ <h3 class="callout-title">Key Points</h3>
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   "dateCreated": "2020-09-15",
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+  "datePublished": "2024-11-05"
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diff --git a/404.html b/404.html
index 4e07e921..f1999c31 100644
--- a/404.html
+++ b/404.html
@@ -336,8 +336,8 @@ <h1>Page not found</h1>
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   "identifier": "https://carpentries-incubator.github.io/bioc-rnaseq/404.html",
   "dateCreated": "2020-09-15",
-  "dateModified": "2024-10-29",
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diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index dc84b353..cef6fdb8 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -341,7 +341,7 @@ <h1>Contributor Code of Conduct</h1>
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   "dateCreated": "2020-09-15",
   "dateModified": "2024-10-22",
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+  "datePublished": "2024-11-05"
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diff --git a/LICENSE.html b/LICENSE.html
index 749ac4ba..bb76154c 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -389,7 +389,7 @@ <h1>Licenses</h1>
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+  "datePublished": "2024-11-05"
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diff --git a/aio.html b/aio.html
index 8c47d884..5c021c3a 100644
--- a/aio.html
+++ b/aio.html
@@ -1241,7 +1241,7 @@ <h3 class="callout-title">Challenge: Discuss the following points with your neig
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+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li>In <code>counts</code>, the rows are genes just like the rows in
@@ -1367,7 +1367,7 @@ <h3 class="callout-title">Challenge</h3>
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@@ -1873,7 +1873,7 @@ <h3 class="callout-title">Challenge: How to subset to mRNA genes</h3>
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@@ -2237,7 +2237,7 @@ <h3 class="callout-title">Challenge: What kind of genes survived this filtering?
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 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
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+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <ol style="list-style-type: decimal">
 <li><p>The major signal in this data (37% variance) is associated with
@@ -2567,7 +2567,7 @@ <h3 class="callout-title">Challenge: Plot the PCA colored by library sizes.</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3"> Show me the solution </h4>
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@@ -3066,7 +3066,7 @@ <h3 class="callout-title">Challenge</h3>
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 <div class="accordion-body">
 <p>In the lesson example the last variable of the design formula is
 <code>time</code>. The <strong>reference level</strong> (first in
@@ -3170,7 +3170,7 @@ <h3 class="callout-title">Challenge</h3>
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@@ -3310,7 +3310,7 @@ <h3 class="callout-title">Challenge</h3>
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-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
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@@ -3816,7 +3816,7 @@ <h3 class="callout-title">Challenge</h3>
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