diff --git a/lib/pact_broker/matrix/refresh_head_matrix_job.rb b/lib/pact_broker/matrix/refresh_head_matrix_job.rb
deleted file mode 100644
index a2fe536ac..000000000
--- a/lib/pact_broker/matrix/refresh_head_matrix_job.rb
+++ /dev/null
@@ -1,16 +0,0 @@
-require 'sucker_punch'
-require 'pact_broker/matrix/head_row'
-
-module PactBroker
-  module Matrix
-    class RefreshHeadMatrixJob
-
-      include SuckerPunch::Job
-      include PactBroker::Logging
-
-      def perform params
-        PactBroker::Matrix::HeadRow.refresh(params[:params])
-      end
-    end
-  end
-end
diff --git a/lib/pact_broker/matrix/repository.rb b/lib/pact_broker/matrix/repository.rb
index 79b262317..21295cff0 100644
--- a/lib/pact_broker/matrix/repository.rb
+++ b/lib/pact_broker/matrix/repository.rb
@@ -2,7 +2,6 @@
 require 'pact_broker/matrix/row'
 require 'pact_broker/matrix/latest_row'
 require 'pact_broker/matrix/head_row'
-require 'pact_broker/matrix/refresh_head_matrix_job'
 require 'pact_broker/error'
 
 
@@ -25,7 +24,7 @@ class Repository
 
       def refresh params
         PactBroker::Matrix::Row.refresh(params)
-        RefreshHeadMatrixJob.perform_in(1, params: params)
+        PactBroker::Matrix::HeadRow.refresh(params)
       end
 
       # Return the latest matrix row (pact/verification) for each consumer_version_number/provider_version_number
diff --git a/lib/pact_broker/matrix/row.rb b/lib/pact_broker/matrix/row.rb
index 7af35e81c..a6df45246 100644
--- a/lib/pact_broker/matrix/row.rb
+++ b/lib/pact_broker/matrix/row.rb
@@ -22,6 +22,9 @@ class Row < Sequel::Model(:materialized_matrix)
         def refresh params
           logger.debug("Refreshing #{model.table_name} for #{params}")
 
+          db = model.db
+          table_name = model.table_name
+
           source_view_name = model.table_name.to_s.gsub('materialized_', '').to_sym
           if params[:consumer_name] || params[:provider_name]
             criteria = {}
@@ -35,17 +38,21 @@ def refresh params
               criteria[:provider_id] = pacticipant.id if pacticipant
             end
             if criteria.any?
-              db[model.table_name].where(criteria).delete
-              db[model.table_name].insert(db[source_view_name].where(criteria))
+              db.transaction do
+                db[table_name].where(criteria).delete
+                db[table_name].insert(db[source_view_name].where(criteria).distinct)
+              end
             end
           end
 
           if params[:pacticipant_name]
             pacticipant = PactBroker::Domain::Pacticipant.where(name_like(:name, params[:pacticipant_name])).single_record
             if pacticipant
-              db[model.table_name].where(consumer_id: pacticipant.id).or(provider_id: pacticipant.id).delete
-              new_rows = db[source_view_name].where(consumer_id: pacticipant.id).or(provider_id: pacticipant.id)
-              db[model.table_name].insert(new_rows)
+              db.transaction do
+                db[table_name].where(consumer_id: pacticipant.id).or(provider_id: pacticipant.id).delete
+                new_rows = db[source_view_name].where(consumer_id: pacticipant.id).or(provider_id: pacticipant.id).distinct
+                db[table_name].insert(new_rows)
+              end
             end
           end
         end
diff --git a/spec/lib/pact_broker/matrix/row_spec.rb b/spec/lib/pact_broker/matrix/row_spec.rb
index 3b258dd52..ef8948922 100644
--- a/spec/lib/pact_broker/matrix/row_spec.rb
+++ b/spec/lib/pact_broker/matrix/row_spec.rb
@@ -3,7 +3,11 @@
 module PactBroker
   module Matrix
     describe Row do
-      describe "refresh" do
+      describe "refresh", migration: true do
+        before do
+          PactBroker::Database.migrate
+        end
+
         let(:td) { TestDataBuilder.new(auto_refresh_matrix: false) }
 
         before do