diff --git a/lib/searchkick/index.rb b/lib/searchkick/index.rb
index 7ad349c..1eade2a 100644
--- a/lib/searchkick/index.rb
+++ b/lib/searchkick/index.rb
@@ -50,11 +50,11 @@ module Searchkick
     end
 
     def retrieve(document_type, id)
-      client.get_source(
+      client.get(
         index: name,
         type: document_type,
         id: id
-      )
+      )["_source"]
     end
 
     protected
diff --git a/searchkick.gemspec b/searchkick.gemspec
index 70d25fa..e2b0d99 100644
--- a/searchkick.gemspec
+++ b/searchkick.gemspec
@@ -19,7 +19,7 @@ Gem::Specification.new do |spec|
   spec.require_paths = ["lib"]
 
   spec.add_dependency "activemodel"
-  spec.add_dependency "elasticsearch"
+  spec.add_dependency "elasticsearch", "~> 0.4.11"
   spec.add_dependency "patron" # persistent http connections for performance
   spec.add_dependency "hashie"
 
--
libgit2 0.21.0