diff --git a/lib/rackstash.rb b/lib/rackstash.rb
index 7779e81..49df40b 100644
--- a/lib/rackstash.rb
+++ b/lib/rackstash.rb
@@ -186,5 +186,6 @@ require 'rackstash/filter/default_tags'
 require 'rackstash/filter/drop'
 require 'rackstash/filter/rename'
 require 'rackstash/filter/replace'
+require 'rackstash/filter/select'
 require 'rackstash/filter/truncate_message'
 require 'rackstash/filter/update'