diff --git a/extensions/sticky/composer.json b/extensions/sticky/composer.json
index 474e6140f..5f0e5b5cd 100644
--- a/extensions/sticky/composer.json
+++ b/extensions/sticky/composer.json
@@ -29,7 +29,7 @@
         "flarum-extension": {
             "title": "Sticky",
             "icon": {
-                "name": "fa fa-thumbtack",
+                "name": "fas fa-thumbtack",
                 "backgroundColor": "#D13E32",
                 "color": "#fff"
             }
diff --git a/extensions/sticky/js/admin/src/main.js b/extensions/sticky/js/admin/src/main.js
index ab0447aa1..b7856cf83 100644
--- a/extensions/sticky/js/admin/src/main.js
+++ b/extensions/sticky/js/admin/src/main.js
@@ -5,7 +5,7 @@ import PermissionGrid from 'flarum/components/PermissionGrid';
 app.initializers.add('flarum-sticky', () => {
   extend(PermissionGrid.prototype, 'moderateItems', items => {
     items.add('sticky', {
-      icon: 'fa fa-thumbtack',
+      icon: 'fas fa-thumbtack',
       label: app.translator.trans('flarum-sticky.admin.permissions.sticky_discussions_label'),
       permission: 'discussion.sticky'
     }, 95);
diff --git a/extensions/sticky/js/forum/src/addStickyBadge.js b/extensions/sticky/js/forum/src/addStickyBadge.js
index 950d578fc..723961585 100644
--- a/extensions/sticky/js/forum/src/addStickyBadge.js
+++ b/extensions/sticky/js/forum/src/addStickyBadge.js
@@ -8,7 +8,7 @@ export default function addStickyBadge() {
       badges.add('sticky', Badge.component({
         type: 'sticky',
         label: app.translator.trans('flarum-sticky.forum.badge.sticky_tooltip'),
-        icon: 'fa fa-thumbtack'
+        icon: 'fas fa-thumbtack'
       }), 10);
     }
   });
diff --git a/extensions/sticky/js/forum/src/addStickyControl.js b/extensions/sticky/js/forum/src/addStickyControl.js
index 94624e99d..6b8aa7d66 100644
--- a/extensions/sticky/js/forum/src/addStickyControl.js
+++ b/extensions/sticky/js/forum/src/addStickyControl.js
@@ -8,7 +8,7 @@ export default function addStickyControl() {
     if (discussion.canSticky()) {
       items.add('sticky', Button.component({
         children: app.translator.trans(discussion.isSticky() ? 'flarum-sticky.forum.discussion_controls.unsticky_button' : 'flarum-sticky.forum.discussion_controls.sticky_button'),
-        icon: 'fa fa-thumbtack',
+        icon: 'fas fa-thumbtack',
         onclick: this.stickyAction.bind(discussion)
       }));
     }
diff --git a/extensions/sticky/js/forum/src/components/DiscussionStickiedPost.js b/extensions/sticky/js/forum/src/components/DiscussionStickiedPost.js
index 353b78280..f3e3736fd 100644
--- a/extensions/sticky/js/forum/src/components/DiscussionStickiedPost.js
+++ b/extensions/sticky/js/forum/src/components/DiscussionStickiedPost.js
@@ -2,7 +2,7 @@ import EventPost from 'flarum/components/EventPost';
 
 export default class DiscussionStickiedPost extends EventPost {
   icon() {
-    return 'fa fa-thumbtack';
+    return 'fas fa-thumbtack';
   }
 
   descriptionKey() {