diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 1e7e5a0f5c..b36b0523b4 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -45,7 +45,7 @@ module Mastodon
 
     def api_versions
       {
-        mastodon: 3,
+        mastodon: 4,
       }
     end