diff --git a/lib/diaspora_federation/federation/sender/hydra_wrapper.rb b/lib/diaspora_federation/federation/sender/hydra_wrapper.rb
index be6dbae..b300b07 100644
--- a/lib/diaspora_federation/federation/sender/hydra_wrapper.rb
+++ b/lib/diaspora_federation/federation/sender/hydra_wrapper.rb
@@ -1,3 +1,5 @@
+require "typhoeus"
+
 module DiasporaFederation
   module Federation
     module Sender