lib/rspotify/playlist.rb in rspotify-2.9.1 vs lib/rspotify/playlist.rb in rspotify-2.9.2

@@ -388,10 +388,10 @@
     #           playlist.replace_tracks!(tracks)
     #           playlist.tracks.map(&:name) #=> ["Somebody That I Used To Know", "Do I Wanna Know?"]
     def replace_tracks!(tracks)
       track_uris = tracks.map(&:uri).join(',')
       url = "#{@path}/tracks?uris=#{track_uris}"
-      User.oauth_put(@owner.id, url, {})
+      User.oauth_put(@owner.id, url, {}.to_json)
 
       @total = tracks.size
       @tracks_cache = nil
       @snapshot_id = nil
       tracks