diff --git a/lib/searchkick/relation.rb b/lib/searchkick/relation.rb
index 091e3b1..4a1dd21 100644
--- a/lib/searchkick/relation.rb
+++ b/lib/searchkick/relation.rb
@@ -212,6 +212,16 @@ module Searchkick
       self
     end
 
+    def indices_boost(value)
+      spawn.indices_boost!(value)
+    end
+
+    # TODO merge options
+    def indices_boost!(value)
+      options[:indices_boost] = value
+      self
+    end
+
     # same as Active Record
     def inspect
       entries = results.first(11).map!(&:inspect)
diff --git a/test/boost_test.rb b/test/boost_test.rb
index fa88193..5642109 100644
--- a/test/boost_test.rb
+++ b/test/boost_test.rb
@@ -237,5 +237,8 @@ class BoostTest < Minitest::Test
     store_names ["Rexx"], Product
 
     assert_order "Rex", ["Rexx", "Rex"], {models: [Animal, Product], indices_boost: {Animal => 1, Product => 200}, fields: [:name]}, Searchkick
+
+    skip "Not working yet"
+    assert_order_relation ["Rexx", "Rex"], Searchkick.search("Rex", relation: true).models(Animal, Product).indices_boost(Animal => 1, Product => 200).fields(:name)
   end
 end
--
libgit2 0.21.0