diff --git a/app/javascript/mastodon/features/compose/components/expiration_dropdown.jsx b/app/javascript/mastodon/features/compose/components/expiration_dropdown.jsx
index dc0a268bb8..b61362a892 100644
--- a/app/javascript/mastodon/features/compose/components/expiration_dropdown.jsx
+++ b/app/javascript/mastodon/features/compose/components/expiration_dropdown.jsx
@@ -209,7 +209,7 @@ class ExpirationDropdown extends PureComponent {
     this.props.onChange(value);
   };
 
-  componentWillMount () {
+  UNSAFE_componentWillMount () {
     const { intl } = this.props;
 
     this.options = [
diff --git a/app/javascript/mastodon/features/compose/components/featured_tags_dropdown.jsx b/app/javascript/mastodon/features/compose/components/featured_tags_dropdown.jsx
index c8bf2b677b..7135520096 100644
--- a/app/javascript/mastodon/features/compose/components/featured_tags_dropdown.jsx
+++ b/app/javascript/mastodon/features/compose/components/featured_tags_dropdown.jsx
@@ -203,7 +203,7 @@ class FeaturedTagsDropdown extends PureComponent {
     this.props.onChange(value);
   };
 
-  componentWillMount () {
+  UNSAFE_componentWillMount () {
     this.options = featuredTags.map((tag) => {
       return { value: `#${tag}`, text: `#${tag}` };
     });