diff --git a/icons/actions/actions-brand-mastodon.html b/icons/actions/actions-brand-mastodon.html
index 13a0ff61a..a0dae3fe1 100644
--- a/icons/actions/actions-brand-mastodon.html
+++ b/icons/actions/actions-brand-mastodon.html
@@ -121,7 +121,7 @@
     <div class="mb-4">
         <h1 class="h2 mb-2">actions-brand-mastodon</h1>
         <div class="d-sm-flex">
-            <div class="my-2 flex-grow-1"></div>        </div>
+            <div class="my-2 flex-grow-1"></div><div class="my-2 ms-sm-3">Introduced in <a href="https://github.com/TYPO3/TYPO3.Icons/releases/tag/v4.2.0" target="_blank" rel="noopener">v4.2.0</a></div>        </div>
     </div><div class="mb-4">
             <div class="iconstage">
                 <div class="iconstage-icon"><span class="icon icon-size-auto icon-state-default">
diff --git a/icons/actions/actions-brand-threads.html b/icons/actions/actions-brand-threads.html
index 8b25fcc72..ccffb1163 100644
--- a/icons/actions/actions-brand-threads.html
+++ b/icons/actions/actions-brand-threads.html
@@ -121,7 +121,7 @@
     <div class="mb-4">
         <h1 class="h2 mb-2">actions-brand-threads</h1>
         <div class="d-sm-flex">
-            <div class="my-2 flex-grow-1"></div>        </div>
+            <div class="my-2 flex-grow-1"></div><div class="my-2 ms-sm-3">Introduced in <a href="https://github.com/TYPO3/TYPO3.Icons/releases/tag/v4.2.0" target="_blank" rel="noopener">v4.2.0</a></div>        </div>
     </div><div class="mb-4">
             <div class="iconstage">
                 <div class="iconstage-icon"><span class="icon icon-size-auto icon-state-default">