diff --git a/src/shared/components/comment/comment-node.tsx b/src/shared/components/comment/comment-node.tsx
index 324cf1a1..394de6ec 100644
--- a/src/shared/components/comment/comment-node.tsx
+++ b/src/shared/components/comment/comment-node.tsx
@@ -360,7 +360,7 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
               {showScores() && (
                 <>
                   <span
-                    className="me-1 font-weight-bold"
+                    className="me-1 fw-bold"
                     aria-label={I18NextService.i18n.t("number_of_points", {
                       count: Number(this.commentView.counts.score),
                       formattedCount: numToSI(this.commentView.counts.score),
@@ -409,7 +409,7 @@ export class CommentNode extends Component<CommentNodeProps, CommentNodeState> {
                     }
                   />
                 )}
-                <div className="d-flex justify-content-between justify-content-lg-start flex-wrap text-muted font-weight-bold">
+                <div className="d-flex justify-content-between justify-content-lg-start flex-wrap text-muted fw-bold">
                   {this.props.showContext && this.linkBtn()}
                   {this.props.markable && (
                     <button
diff --git a/src/shared/components/common/image-upload-form.tsx b/src/shared/components/common/image-upload-form.tsx
index 5f68ea54..283a87ed 100644
--- a/src/shared/components/common/image-upload-form.tsx
+++ b/src/shared/components/common/image-upload-form.tsx
@@ -33,10 +33,7 @@ export class ImageUploadForm extends Component<
   render() {
     return (
       <form className="image-upload-form d-inline">
-        <label
-          htmlFor={this.id}
-          className="pointer text-muted small font-weight-bold"
-        >
+        <label htmlFor={this.id} className="pointer text-muted small fw-bold">
           {this.props.imageSrc ? (
             <span className="d-inline-block position-relative">
               <img
diff --git a/src/shared/components/common/markdown-textarea.tsx b/src/shared/components/common/markdown-textarea.tsx
index 25906097..8963d5e9 100644
--- a/src/shared/components/common/markdown-textarea.tsx
+++ b/src/shared/components/common/markdown-textarea.tsx
@@ -167,7 +167,7 @@ export class MarkdownTextArea extends Component<
                   onEmojiClick={e => this.handleEmoji(this, e)}
                   disabled={this.isDisabled}
                 ></EmojiPicker>
-                <form className="btn btn-sm text-muted font-weight-bold">
+                <form className="btn btn-sm text-muted fw-bold">
                   <label
                     htmlFor={`file-upload-${this.id}`}
                     className={`mb-0 ${
@@ -210,7 +210,7 @@ export class MarkdownTextArea extends Component<
                 {this.getFormatButton("spoiler", this.handleInsertSpoiler)}
                 <a
                   href={markdownHelpUrl}
-                  className="btn btn-sm text-muted font-weight-bold"
+                  className="btn btn-sm text-muted fw-bold"
                   title={I18NextService.i18n.t("formatting_help")}
                   rel={relTags}
                 >
diff --git a/src/shared/components/common/moment-time.tsx b/src/shared/components/common/moment-time.tsx
index 7c5693ed..f216adf0 100644
--- a/src/shared/components/common/moment-time.tsx
+++ b/src/shared/components/common/moment-time.tsx
@@ -39,7 +39,7 @@ export class MomentTime extends Component<MomentTimeProps, any> {
       return (
         <span
           data-tippy-content={this.createdAndModifiedTimes()}
-          className="moment-time font-italics pointer unselectable"
+          className="moment-time fst-italics pointer unselectable"
         >
           <Icon icon="edit-2" classes="icon-inline me-1" />
           {formatPastDate(this.props.updated)}
diff --git a/src/shared/components/community/sidebar.tsx b/src/shared/components/community/sidebar.tsx
index 81a5dafc..733c19a1 100644
--- a/src/shared/components/community/sidebar.tsx
+++ b/src/shared/components/community/sidebar.tsx
@@ -204,17 +204,17 @@ export class Sidebar extends Component<SidebarProps, SidebarState> {
             </button>
           )}
           {community.removed && (
-            <small className="me-2 text-muted font-italic">
+            <small className="me-2 text-muted fst-italic">
               {I18NextService.i18n.t("removed")}
             </small>
           )}
           {community.deleted && (
-            <small className="me-2 text-muted font-italic">
+            <small className="me-2 text-muted fst-italic">
               {I18NextService.i18n.t("deleted")}
             </small>
           )}
           {community.nsfw && (
-            <small className="me-2 text-muted font-italic">
+            <small className="me-2 text-muted fst-italic">
               {I18NextService.i18n.t("nsfw")}
             </small>
           )}
@@ -309,7 +309,7 @@ export class Sidebar extends Component<SidebarProps, SidebarState> {
     const community_view = this.props.community_view;
     return (
       <>
-        <ul className="list-inline mb-1 text-muted font-weight-bold">
+        <ul className="list-inline mb-1 text-muted fw-bold">
           {amMod(this.props.moderators) && (
             <>
               <li className="list-inline-item-action">
diff --git a/src/shared/components/home/login.tsx b/src/shared/components/home/login.tsx
index 1853a82b..4dd64665 100644
--- a/src/shared/components/home/login.tsx
+++ b/src/shared/components/home/login.tsx
@@ -108,7 +108,7 @@ export class Login extends Component<any, State> {
               <button
                 type="button"
                 onClick={linkEvent(this, this.handlePasswordReset)}
-                className="btn p-0 btn-link d-inline-block float-right text-muted small font-weight-bold pointer-events not-allowed"
+                className="btn p-0 btn-link d-inline-block float-right text-muted small fw-bold pointer-events not-allowed"
                 disabled={
                   !!this.state.form.username_or_email &&
                   !validEmail(this.state.form.username_or_email)
diff --git a/src/shared/components/post/metadata-card.tsx b/src/shared/components/post/metadata-card.tsx
index 9ba0cbaf..2d770d44 100644
--- a/src/shared/components/post/metadata-card.tsx
+++ b/src/shared/components/post/metadata-card.tsx
@@ -43,7 +43,7 @@ export class MetadataCard extends Component<
                       </h5>
                       <span className="d-inline-block ms-2 mb-2 small text-muted">
                         <a
-                          className="text-muted font-italic"
+                          className="text-muted fst-italic"
                           href={post.url}
                           rel={relTags}
                         >
diff --git a/src/shared/components/post/post-form.tsx b/src/shared/components/post/post-form.tsx
index ebea4324..6e478326 100644
--- a/src/shared/components/post/post-form.tsx
+++ b/src/shared/components/post/post-form.tsx
@@ -358,7 +358,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
                 htmlFor="file-upload"
                 className={`${
                   UserService.Instance.myUserInfo && "pointer"
-                } d-inline-block float-right text-muted font-weight-bold`}
+                } d-inline-block float-right text-muted fw-bold`}
                 data-tippy-content={I18NextService.i18n.t("upload_image")}
               >
                 <Icon icon="image" classes="icon-inline" />
@@ -377,7 +377,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
               <div>
                 <a
                   href={`${webArchiveUrl}/save/${encodeURIComponent(url)}`}
-                  className="me-2 d-inline-block float-right text-muted small font-weight-bold"
+                  className="me-2 d-inline-block float-right text-muted small fw-bold"
                   rel={relTags}
                 >
                   archive.org {I18NextService.i18n.t("archive_link")}
@@ -386,7 +386,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
                   href={`${ghostArchiveUrl}/search?term=${encodeURIComponent(
                     url
                   )}`}
-                  className="me-2 d-inline-block float-right text-muted small font-weight-bold"
+                  className="me-2 d-inline-block float-right text-muted small fw-bold"
                   rel={relTags}
                 >
                   ghostarchive.org {I18NextService.i18n.t("archive_link")}
@@ -395,7 +395,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
                   href={`${archiveTodayUrl}/?run=1&url=${encodeURIComponent(
                     url
                   )}`}
-                  className="me-2 d-inline-block float-right text-muted small font-weight-bold"
+                  className="me-2 d-inline-block float-right text-muted small fw-bold"
                   rel={relTags}
                 >
                   archive.today {I18NextService.i18n.t("archive_link")}
@@ -419,7 +419,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
             )}
             {this.props.crossPosts && this.props.crossPosts.length > 0 && (
               <>
-                <div className="my-1 text-muted small font-weight-bold">
+                <div className="my-1 text-muted small fw-bold">
                   {I18NextService.i18n.t("cross_posts")}
                 </div>
                 <PostListings
@@ -586,7 +586,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
         return (
           suggestedTitle && (
             <div
-              className="mt-1 text-muted small font-weight-bold pointer"
+              className="mt-1 text-muted small fw-bold pointer"
               role="button"
               onClick={linkEvent(
                 { i: this, suggestedTitle },
@@ -613,7 +613,7 @@ export class PostForm extends Component<PostFormProps, PostFormState> {
           suggestedPosts &&
           suggestedPosts.length > 0 && (
             <>
-              <div className="my-1 text-muted small font-weight-bold">
+              <div className="my-1 text-muted small fw-bold">
                 {I18NextService.i18n.t("related_posts")}
               </div>
               <PostListings
diff --git a/src/shared/components/post/post-listing.tsx b/src/shared/components/post/post-listing.tsx
index eea32a10..3c27402b 100644
--- a/src/shared/components/post/post-listing.tsx
+++ b/src/shared/components/post/post-listing.tsx
@@ -488,7 +488,7 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
           )}
           {post.deleted && (
             <small
-              className="unselectable pointer ms-2 text-muted font-italic"
+              className="unselectable pointer ms-2 text-muted fst-italic"
               data-tippy-content={I18NextService.i18n.t("deleted")}
             >
               <Icon icon="trash" classes="icon-inline text-danger" />
@@ -496,7 +496,7 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
           )}
           {post.locked && (
             <small
-              className="unselectable pointer ms-2 text-muted font-italic"
+              className="unselectable pointer ms-2 text-muted fst-italic"
               data-tippy-content={I18NextService.i18n.t("locked")}
             >
               <Icon icon="lock" classes="icon-inline text-danger" />
@@ -504,7 +504,7 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
           )}
           {post.featured_community && (
             <small
-              className="unselectable pointer ms-2 text-muted font-italic"
+              className="unselectable pointer ms-2 text-muted fst-italic"
               data-tippy-content={I18NextService.i18n.t(
                 "featured_in_community"
               )}
@@ -515,7 +515,7 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
           )}
           {post.featured_local && (
             <small
-              className="unselectable pointer ms-2 text-muted font-italic"
+              className="unselectable pointer ms-2 text-muted fst-italic"
               data-tippy-content={I18NextService.i18n.t("featured_in_local")}
               aria-label={I18NextService.i18n.t("featured_in_local")}
             >
@@ -541,7 +541,7 @@ export class PostListing extends Component<PostListingProps, PostListingState> {
       <p className="d-flex text-muted align-items-center gap-1 small m-0">
         {url && !(hostname(url) === getExternalHost()) && (
           <a
-            className="text-muted font-italic"
+            className="text-muted fst-italic"
             href={url}
             title={url}
             rel={relTags}
diff --git a/src/shared/components/private_message/private-message.tsx b/src/shared/components/private_message/private-message.tsx
index 110a908f..b31e1cdb 100644
--- a/src/shared/components/private_message/private-message.tsx
+++ b/src/shared/components/private_message/private-message.tsx
@@ -140,7 +140,7 @@ export class PrivateMessage extends Component<
                   dangerouslySetInnerHTML={mdToHtml(this.messageUnlessRemoved)}
                 />
               )}
-              <ul className="list-inline mb-0 text-muted font-weight-bold">
+              <ul className="list-inline mb-0 text-muted fw-bold">
                 {!this.mine && (
                   <>
                     <li className="list-inline-item">