diff --git a/src/components/status.tsx b/src/components/status.tsx
index b41bdd7a9..830e7b9e5 100644
--- a/src/components/status.tsx
+++ b/src/components/status.tsx
@@ -240,7 +240,7 @@ const Status: React.FC<IStatus> = (props) => {
       const accounts = status.accounts || ImmutableList([status.account]);
 
       const renderedAccounts = accounts.slice(0, 2).map(account => !!account && (
-        <Link to={`/@${account.acct}`} className='hover:underline'>
+        <Link key={account.acct} to={`/@${account.acct}`} className='hover:underline'>
           <bdi className='truncate'>
             <strong
               className='text-gray-800 dark:text-gray-200'
diff --git a/src/features/compose/components/reply-mentions.tsx b/src/features/compose/components/reply-mentions.tsx
index 1a6cbcd21..c0542c551 100644
--- a/src/features/compose/components/reply-mentions.tsx
+++ b/src/features/compose/components/reply-mentions.tsx
@@ -50,7 +50,10 @@ const ReplyMentions: React.FC<IReplyMentions> = ({ composeId }) => {
   const accounts = to.slice(0, 2).map((acct: string) => {
     const username = acct.split('@')[0];
     return (
-      <span className='inline-block text-primary-600 no-underline [direction:ltr] hover:text-primary-700 hover:underline dark:text-accent-blue dark:hover:text-accent-blue'>
+      <span
+        key={acct}
+        className='inline-block text-primary-600 no-underline [direction:ltr] hover:text-primary-700 hover:underline dark:text-accent-blue dark:hover:text-accent-blue'
+      >
         @{username}
       </span>
     );
diff --git a/src/features/notifications/components/notification.tsx b/src/features/notifications/components/notification.tsx
index 98699ea96..596b755d8 100644
--- a/src/features/notifications/components/notification.tsx
+++ b/src/features/notifications/components/notification.tsx
@@ -30,7 +30,7 @@ const notificationForScreenReader = (intl: IntlShape, message: string, timestamp
 };
 
 const buildLink = (account: AccountEntity): JSX.Element => (
-  <bdi>
+  <bdi key={account.acct}>
     <Link
       className='font-bold text-gray-800 hover:underline dark:text-gray-200'
       title={account.acct}
@@ -136,6 +136,7 @@ const buildMessage = (
   if (accounts.size > 2) {
     renderedAccounts.push(
       <FormattedMessage
+        key='more'
         id='notification.more'
         defaultMessage='{count, plural, one {# other} other {# others}}'
         values={{ count: accounts.size - renderedAccounts.length }}
diff --git a/src/features/ui/components/modals/select-bookmark-folder-modal.tsx b/src/features/ui/components/modals/select-bookmark-folder-modal.tsx
index 01552cdb8..8fe50938d 100644
--- a/src/features/ui/components/modals/select-bookmark-folder-modal.tsx
+++ b/src/features/ui/components/modals/select-bookmark-folder-modal.tsx
@@ -40,6 +40,7 @@ const SelectBookmarkFolderModal: React.FC<ISelectBookmarkFolderModal> = ({ statu
 
   const items = [
     <RadioItem
+      key='all'
       label={
         <HStack alignItems='center' space={2}>
           <Icon src={require('@tabler/icons/outline/bookmarks.svg')} size={20} />