diff --git a/appcast/_appcast_style.css b/appcast/_appcast_style.css
index 6933edc..7e5a09a 100644
--- a/appcast/_appcast_style.css
+++ b/appcast/_appcast_style.css
@@ -1,4 +1,19 @@
 <style>
 :root { supported-color-schemes: light dark; color-scheme: light dark; }
-h1 { padding-bottom: .3em; border-bottom: 1px solid gray; }
+div h1 { padding-bottom: .3em; border-bottom: 1px solid gray; }
+
+/* Older versions' release notes. Will be optionally shown in collapsed form if the user has upgraded across multiple versions. */
+div > details.oldVersionToggle > summary  {
+  font-size: 1.2em;
+  border-radius: 5px;
+  border-bottom: 3px solid #57c4d0;
+  cursor: pointer;
+  padding: 10px;
+}
+.toc {
+  /* Sparkle does not seem to allow anchor links. Just disable the TOC. */
+  display: none;
+}
+div.sparkle-installed-version { display:none; }
+div.sparkle-installed-version ~ section { display: none; }
 </style>
diff --git a/appcast/_prerelease.xml b/appcast/_prerelease.xml
index 38605f7..c77f781 100644
--- a/appcast/_prerelease.xml
+++ b/appcast/_prerelease.xml
@@ -3,7 +3,9 @@
       <title>MacVim prerelease-180.2</title>
       <description><![CDATA[
 {% include_relative _appcast_style.css %}
+<div>
 {% include releases/r180.2.html %}
+</div>
 <p><br /><small><a href="https://github.com/macvim-dev/macvim/releases/">Latest release notes &gt;</a></small></p>
       ]]></description>
       <sparkle:fullReleaseNotesLink>https://github.com/macvim-dev/macvim/releases</sparkle:fullReleaseNotesLink>
diff --git a/appcast/_release.xml b/appcast/_release.xml
index 2eb2261..5994490 100644
--- a/appcast/_release.xml
+++ b/appcast/_release.xml
@@ -2,7 +2,9 @@
       <title>MacVim release-180</title>
       <description><![CDATA[
 {% include_relative _appcast_style.css %}
+<div>
 {% include releases/r180.html %}
+</div>
 <p><br /><small><a href="https://github.com/macvim-dev/macvim/releases/latest">Latest release notes &gt;</a></small></p>
       ]]></description>
       <sparkle:fullReleaseNotesLink>https://github.com/macvim-dev/macvim/releases</sparkle:fullReleaseNotesLink>
diff --git a/appcast/_release_legacy.xml b/appcast/_release_legacy.xml
index fca0d14..dfdab74 100644
--- a/appcast/_release_legacy.xml
+++ b/appcast/_release_legacy.xml
@@ -2,7 +2,9 @@
       <title>MacVim release-180</title>
       <description><![CDATA[
 {% include_relative _appcast_style.css %}
+<div>
 {% include releases/r180.html %}
+</div>
 <p><br /><small><a href="https://github.com/macvim-dev/macvim/releases/latest">Latest release notes &gt;</a></small></p>
       ]]></description>
       <sparkle:fullReleaseNotesLink>https://github.com/macvim-dev/macvim/releases</sparkle:fullReleaseNotesLink>