diff --git a/15-carpentries.html b/15-carpentries.html
index 80a7a7cad..799d543b7 100644
--- a/15-carpentries.html
+++ b/15-carpentries.html
@@ -679,7 +679,7 @@ <h3 class="callout-title">Test yourself!</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Links to definitions </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>These terms are defined in our Community Glossary.</p>
 <ul><li><a href="https://github.com/carpentries/community-development/blob/main/glossary.md#lesson" class="external-link">Lesson</a></li>
diff --git a/17-live.html b/17-live.html
index 8c4831ff5..85feb9bf8 100644
--- a/17-live.html
+++ b/17-live.html
@@ -558,7 +558,7 @@ <h3 class="callout-title">Anticipate the Impact</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <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">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Some advantages are:</p>
 <ul><li>Watching a program being written is more compelling than watching
@@ -640,7 +640,7 @@ <h3 class="callout-title">Compare and Contrast</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>The instructor will lead a discussion about the videos and your
 feedback on them, making sure that the points of the Top Ten Tips below
diff --git a/23-introductions.html b/23-introductions.html
index ba971f203..d4ecc0a60 100644
--- a/23-introductions.html
+++ b/23-introductions.html
@@ -579,7 +579,7 @@ <h3 class="callout-title">What is in an Introduction?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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>Set positive first impressions</li>
 <li>Introduce yourself effectively (and have other workshop leaders do
@@ -799,7 +799,7 @@ <h3 class="callout-title">Brainstorm: Making the Last Moments Count</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ul><li>Close and save files. Where can those files be found, and how can
 learners pick up independently where you left off?</li>
diff --git a/additional_exercises.html b/additional_exercises.html
index c3ff81ae0..a65ed2748 100644
--- a/additional_exercises.html
+++ b/additional_exercises.html
@@ -547,7 +547,7 @@ <h3 class="callout-title">How Many?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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">
 <p>This will depend on the event they are attending. Most attendees will
 guess low. The purpose of this exercise is to emphasize the importance
diff --git a/aio.html b/aio.html
index ea7e9d230..28a786e25 100644
--- a/aio.html
+++ b/aio.html
@@ -4422,7 +4422,7 @@ <h3 class="callout-title">Test yourself!</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Links to definitions </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>These terms are defined in our Community Glossary.</p>
 <ul>
@@ -4737,7 +4737,7 @@ <h3 class="callout-title">Anticipate the Impact</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <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">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Some advantages are:</p>
 <ul>
@@ -4825,7 +4825,7 @@ <h3 class="callout-title">Compare and Contrast</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>The instructor will lead a discussion about the videos and your
 feedback on them, making sure that the points of the Top Ten Tips below
@@ -6104,7 +6104,7 @@ <h3 class="callout-title">What is in an Introduction?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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>Set positive first impressions</li>
@@ -6341,7 +6341,7 @@ <h3 class="callout-title">Brainstorm: Making the Last Moments Count</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ul>
 <li>Close and save files. Where can those files be found, and how can
diff --git a/checkout.html b/checkout.html
index 83ee3128d..143c65655 100644
--- a/checkout.html
+++ b/checkout.html
@@ -476,7 +476,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Checkout Instructions</h1>
-        <p>Last updated on 2024-12-07 |
+        <p>Last updated on 2024-12-10 |
 
         <a href="https://github.com/carpentries/instructor-training/edit/main/learners/checkout.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -542,7 +542,7 @@ <h3 class="callout-title">Help! I have a Question about Checkout!</h3>
 specifically for this step. If you see another session you would like to
 attend, you may choose to apply that to fulfil your <a href="#getinvolved">Get Involved step</a>, but not the Welcome Session
 step.</p>
-<p>Sign up on the <a href="https://pad.carpentries.org/welcome-sessions-2024" class="external-link">Community
+<p>Sign up on the <a href="https://pad.carpentries.org/welcome-sessions-2025" class="external-link">Community
 Welcome Sessions Etherpad</a>. <strong>Take care to double check the
 time zone</strong>, and mark your calendar after signing up! At the time
 of the event, the Zoom link may be found at the top of that
@@ -766,7 +766,7 @@ <h3 id="attend-a-regional-call-skill-up-session-or-other-community-programming">
 these sessions can be used to fulfill your Get Involved step for
 Instructor checkout. For more on the different types of Carpentries
 community programming, <a href="https://carpentries.org/blog/2023/04/2023-04-28-new-community-programming/" class="external-link">see
-this blog post</a> or go directly to the <a href="https://pad.carpentries.org/community-sessions-2024" class="external-link">Community
+this blog post</a> or go directly to the <a href="https://pad.carpentries.org/community-sessions-2025" class="external-link">Community
 Sessions Etherpad</a> to look for sessions that will work for you!</p>
 </div>
 <div class="section level3">
@@ -1017,7 +1017,7 @@ <h3 id="add-your-get-involved-step-to-your-record-in-our-database-amy">Add your
   "url": "https://carpentries.github.io/instructor-training/checkout.html",
   "identifier": "https://carpentries.github.io/instructor-training/checkout.html",
   "dateCreated": "2014-11-16",
-  "dateModified": "2024-12-07",
+  "dateModified": "2024-12-10",
   "datePublished": "2024-12-10"
 }
 
diff --git a/instructor/09-eia.html b/instructor/09-eia.html
index 078bf4597..48b976989 100644
--- a/instructor/09-eia.html
+++ b/instructor/09-eia.html
@@ -600,7 +600,7 @@ <h3 class="callout-title">Discuss The Carpentries Core Values</h3>
 <button class="accordion-button instructor-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseInstructor1" aria-expanded="false" aria-controls="collapseInstructor1">
   <h3 class="accordion-header" id="headingInstructor1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div> Instructor Note </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>In your discussion of accessibility, it is helpful to point out that
 accessibility may not always affect only individual learners, such as
diff --git a/instructor/15-carpentries.html b/instructor/15-carpentries.html
index 2dcc51fe9..19e3b9ffb 100644
--- a/instructor/15-carpentries.html
+++ b/instructor/15-carpentries.html
@@ -512,7 +512,7 @@ <h1>The Carpentries: How We Operate</h1>
 <button class="accordion-button instructor-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseInstructor1" aria-expanded="false" aria-controls="collapseInstructor1">
   <h3 class="accordion-header" id="headingInstructor1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div> Instructor Note </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul><li><p>CK: Not an “official” exercise, but after explaining the
 workshops and how to run them, go around the room, asking each person if
@@ -707,7 +707,7 @@ <h3 class="callout-title">Test yourself!</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Links to definitions </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>These terms are defined in our Community Glossary.</p>
 <ul><li><a href="https://github.com/carpentries/community-development/blob/main/glossary.md#lesson" class="external-link">Lesson</a></li>
diff --git a/instructor/17-live.html b/instructor/17-live.html
index a4b40c62a..5270a9ebf 100644
--- a/instructor/17-live.html
+++ b/instructor/17-live.html
@@ -560,7 +560,7 @@ <h3 class="callout-title">Anticipate the Impact</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <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">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Some advantages are:</p>
 <ul><li>Watching a program being written is more compelling than watching
@@ -642,7 +642,7 @@ <h3 class="callout-title">Compare and Contrast</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>The instructor will lead a discussion about the videos and your
 feedback on them, making sure that the points of the Top Ten Tips below
diff --git a/instructor/18-preparation.html b/instructor/18-preparation.html
index c211556a1..47f48e552 100644
--- a/instructor/18-preparation.html
+++ b/instructor/18-preparation.html
@@ -560,7 +560,7 @@ <h3 class="accordion-header" id="headingInstructor1">
   A note on cutting
   </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>This episode is a common place for Trainers to cut parts of while
 preparing to teach. That’s not because this is not important – this page
diff --git a/instructor/23-introductions.html b/instructor/23-introductions.html
index ec65fe63b..c370d8cd4 100644
--- a/instructor/23-introductions.html
+++ b/instructor/23-introductions.html
@@ -581,7 +581,7 @@ <h3 class="callout-title">What is in an Introduction?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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>Set positive first impressions</li>
 <li>Introduce yourself effectively (and have other workshop leaders do
@@ -801,7 +801,7 @@ <h3 class="callout-title">Brainstorm: Making the Last Moments Count</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ul><li>Close and save files. Where can those files be found, and how can
 learners pick up independently where you left off?</li>
diff --git a/instructor/additional_exercises.html b/instructor/additional_exercises.html
index 653d9251e..1d76fb6b7 100644
--- a/instructor/additional_exercises.html
+++ b/instructor/additional_exercises.html
@@ -549,7 +549,7 @@ <h3 class="callout-title">How Many?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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">
 <p>This will depend on the event they are attending. Most attendees will
 guess low. The purpose of this exercise is to emphasize the importance
diff --git a/instructor/aio.html b/instructor/aio.html
index 2112af596..ee826b87d 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -3250,7 +3250,7 @@ <h3 class="callout-title">Discuss The Carpentries Core Values</h3>
 <button class="accordion-button instructor-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseInstructor1" aria-expanded="false" aria-controls="collapseInstructor1">
   <h3 class="accordion-header" id="headingInstructor1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div> Instructor Note </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>In your discussion of accessibility, it is helpful to point out that
 accessibility may not always affect only individual learners, such as
@@ -4341,7 +4341,7 @@ <h3 class="callout-title">Key Points</h3>
 <button class="accordion-button instructor-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseInstructor1" aria-expanded="false" aria-controls="collapseInstructor1">
   <h3 class="accordion-header" id="headingInstructor1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div> Instructor Note </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <ul>
 <li><p>CK: Not an “official” exercise, but after explaining the
@@ -4558,7 +4558,7 @@ <h3 class="callout-title">Test yourself!</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Links to definitions </h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>These terms are defined in our Community Glossary.</p>
 <ul>
@@ -4875,7 +4875,7 @@ <h3 class="callout-title">Anticipate the Impact</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <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">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>Some advantages are:</p>
 <ul>
@@ -4963,7 +4963,7 @@ <h3 class="callout-title">Compare and Contrast</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>The instructor will lead a discussion about the videos and your
 feedback on them, making sure that the points of the Top Ten Tips below
@@ -5155,7 +5155,7 @@ <h3 class="accordion-header" id="headingInstructor1">
   A note on cutting
   </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>This episode is a common place for Trainers to cut parts of while
 preparing to teach. That’s not because this is not important – this page
@@ -6284,7 +6284,7 @@ <h3 class="callout-title">What is in an Introduction?</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1"> Show me the solution </h4>
 </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>Set positive first impressions</li>
@@ -6521,7 +6521,7 @@ <h3 class="callout-title">Brainstorm: Making the Last Moments Count</h3>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2"> Show me the solution </h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <ul>
 <li>Close and save files. Where can those files be found, and how can
diff --git a/instructor/checkout.html b/instructor/checkout.html
index b2a9997ee..6f0c0a7e8 100644
--- a/instructor/checkout.html
+++ b/instructor/checkout.html
@@ -476,7 +476,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Checkout Instructions</h1>
-        <p>Last updated on 2024-12-07 |
+        <p>Last updated on 2024-12-10 |
 
         <a href="https://github.com/carpentries/instructor-training/edit/main/learners/checkout.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 
@@ -544,7 +544,7 @@ <h3 class="callout-title">Help! I have a Question about Checkout!</h3>
 specifically for this step. If you see another session you would like to
 attend, you may choose to apply that to fulfil your <a href="#getinvolved">Get Involved step</a>, but not the Welcome Session
 step.</p>
-<p>Sign up on the <a href="https://pad.carpentries.org/welcome-sessions-2024" class="external-link">Community
+<p>Sign up on the <a href="https://pad.carpentries.org/welcome-sessions-2025" class="external-link">Community
 Welcome Sessions Etherpad</a>. <strong>Take care to double check the
 time zone</strong>, and mark your calendar after signing up! At the time
 of the event, the Zoom link may be found at the top of that
@@ -768,7 +768,7 @@ <h3 id="attend-a-regional-call-skill-up-session-or-other-community-programming">
 these sessions can be used to fulfill your Get Involved step for
 Instructor checkout. For more on the different types of Carpentries
 community programming, <a href="https://carpentries.org/blog/2023/04/2023-04-28-new-community-programming/" class="external-link">see
-this blog post</a> or go directly to the <a href="https://pad.carpentries.org/community-sessions-2024" class="external-link">Community
+this blog post</a> or go directly to the <a href="https://pad.carpentries.org/community-sessions-2025" class="external-link">Community
 Sessions Etherpad</a> to look for sessions that will work for you!</p>
 </div>
 <div class="section level3">
@@ -1019,7 +1019,7 @@ <h3 id="add-your-get-involved-step-to-your-record-in-our-database-amy">Add your
   "url": "https://carpentries.github.io/instructor-training/instructor/checkout.html",
   "identifier": "https://carpentries.github.io/instructor-training/instructor/checkout.html",
   "dateCreated": "2014-11-16",
-  "dateModified": "2024-12-07",
+  "dateModified": "2024-12-10",
   "datePublished": "2024-12-10"
 }
 
diff --git a/instructor/demo_lessons.html b/instructor/demo_lessons.html
index 34c1e8fc4..d12f00b05 100644
--- a/instructor/demo_lessons.html
+++ b/instructor/demo_lessons.html
@@ -635,7 +635,7 @@ <h3 id="dc-ecology">Data Carpentry: Ecology<a class="anchor" aria-label="anchor"
 <button class="accordion-button instructor-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseInstructor1" aria-expanded="false" aria-controls="collapseInstructor1">
   <h3 class="accordion-header" id="headingInstructor1">  <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div> Instructor Note </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>The following is no longer recommended for new trainees, but is
 eligible for trainees who have previously registered for it:</p>
diff --git a/instructor/index.html b/instructor/index.html
index 9e796b54f..8b6b4df93 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -486,7 +486,7 @@ <h3 class="accordion-header" id="headingInstructor1">
   A note about instructor view
   </h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>The instructor view has a few features that the learner view does not
 have:</p>
diff --git a/md5sum.txt b/md5sum.txt
index f9aaaaede..942423450 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -33,7 +33,7 @@
 "instructors/additional_exercises.md" "d37f69c677e049696accd850883f5e1a" "site/built/additional_exercises.md" "2024-03-11"
 "instructors/instructor-notes.md" "6d07adfe2c65f3e0f5baf5e86d6e8e9b" "site/built/instructor-notes.md" "2024-12-07"
 "learners/training_calendar.md" "e72a8883d24c8694313eccd0a657cacf" "site/built/training_calendar.md" "2024-12-07"
-"learners/checkout.md" "243a17214e2c0566df5821ecc7c39d44" "site/built/checkout.md" "2024-12-07"
+"learners/checkout.md" "63207f5e7e23e88e4f9eefe46385f5a9" "site/built/checkout.md" "2024-12-10"
 "learners/demo_lessons.md" "5aaeb0c58064be07c5a092e8e90fdf9b" "site/built/demo_lessons.md" "2024-07-24"
 "learners/demos_rubric.md" "8d00479455c08c5873c157934866b55c" "site/built/demos_rubric.md" "2024-07-23"
 "learners/members.md" "84e17620076b2093696780ef6190d3b5" "site/built/members.md" "2024-03-11"
diff --git a/pkgdown.yml b/pkgdown.yml
index df2a1cca8..1fc90b560 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,4 +2,4 @@ pandoc: 3.1.11
 pkgdown: 2.1.1
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-12-10T00:16Z
+last_built: 2024-12-10T14:29Z