diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 43ad4e3..8598fe0 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -72,7 +72,7 @@ module FastJsonapi
             temp_hash[:links] = links_hash(record, params) if data_links.present?
             temp_hash
           end
-          record_hash[:relationships] = record_hash[:relationships].merge(relationships_hash(record, uncachable_relationships_to_serialize, params)) if uncachable_relationships_to_serialize.present?
+          record_hash[:relationships] = record_hash[:relationships].merge(relationships_hash(record, uncachable_relationships_to_serialize, fieldset, params)) if uncachable_relationships_to_serialize.present?
           record_hash[:meta] = meta_hash(record, params) if meta_to_serialize.present?
           record_hash
         else
@@ -130,7 +130,7 @@ module FastJsonapi
 
             included_objects.each do |inc_obj|
               if remaining_items(items)
-                serializer_records = serializer.get_included_records(inc_obj, remaining_items(items), known_included_objects, fieldsets)
+                serializer_records = serializer.get_included_records(inc_obj, remaining_items(items), known_included_objects, fieldsets, params)
                 included_records.concat(serializer_records) unless serializer_records.empty?
               end
 
diff --git a/spec/lib/object_serializer_spec.rb b/spec/lib/object_serializer_spec.rb
index 07cbbef..06aac37 100644
--- a/spec/lib/object_serializer_spec.rb
+++ b/spec/lib/object_serializer_spec.rb
@@ -310,6 +310,23 @@ describe FastJsonapi::ObjectSerializer do
     end
   end
 
+  context 'when serializing included, params should be available in any serializer' do
+    subject(:serializable_hash) do
+      options = {}
+      options[:include] = [:"actors.awards"]
+      options[:params] = { include_award_year: true }
+      MovieSerializer.new(movie, options).serializable_hash
+    end
+    let(:actor) { movie.actors.first }
+    let(:award) { actor.awards.first }
+    let(:year) { award.year }
+
+    it 'passes params to deeply nested includes' do
+      expect(year).to_not be_blank
+      expect(serializable_hash[:included][0][:attributes][:year]).to eq year
+    end
+  end
+
   context 'when is_collection option present' do
     subject { MovieSerializer.new(resource, is_collection_options).serializable_hash }
 
diff --git a/spec/shared/contexts/movie_context.rb b/spec/shared/contexts/movie_context.rb
index 9061226..b92d3d5 100644
--- a/spec/shared/contexts/movie_context.rb
+++ b/spec/shared/contexts/movie_context.rb
@@ -80,6 +80,7 @@ RSpec.shared_context 'movie class' do
             a.id = i
             a.title = "Test Award #{i}"
             a.actor_id = id
+            a.year = 1990 + i
           end
         end
       end
@@ -110,7 +111,7 @@ RSpec.shared_context 'movie class' do
     end
 
     class Award
-      attr_accessor :id, :title, :actor_id
+      attr_accessor :id, :title, :actor_id, :year
     end
 
     class State
@@ -225,6 +226,11 @@ RSpec.shared_context 'movie class' do
     class AwardSerializer
       include FastJsonapi::ObjectSerializer
       attributes :id, :title
+      attribute :year, if: Proc.new { |record, params|
+        params[:include_award_year].present? ? 
+          params[:include_award_year] : 
+          false
+      }
       belongs_to :actor
     end