diff --git a/lib/tasks/correct_incref_values.rake b/lib/tasks/correct_incref_values.rake
index 0b1921998..cc9278a72 100644
--- a/lib/tasks/correct_incref_values.rake
+++ b/lib/tasks/correct_incref_values.rake
@@ -1,6 +1,6 @@
 desc "Alter incref values for non imported lettings logs in the database"
 task correct_incref_values: :environment do
-  LettingsLog.where(old_id: nil, net_income_known: 0).update!(incref: 0)
-  LettingsLog.where(old_id: nil, net_income_known: 1).update!(incref: 2)
-  LettingsLog.where(old_id: nil, net_income_known: 2).update!(incref: 1)
+  LettingsLog.where(old_id: nil, net_income_known: 0).update_all(incref: 0)
+  LettingsLog.where(old_id: nil, net_income_known: 1).update_all(incref: 2)
+  LettingsLog.where(old_id: nil, net_income_known: 2).update_all(incref: 1)
 end
diff --git a/spec/lib/tasks/correct_incref_values_spec.rb b/spec/lib/tasks/correct_incref_values_spec.rb
index fc046dcf6..8acddb636 100644
--- a/spec/lib/tasks/correct_incref_values_spec.rb
+++ b/spec/lib/tasks/correct_incref_values_spec.rb
@@ -31,6 +31,14 @@ RSpec.describe "correct_incref_values" do
         task.invoke
         expect(lettings_log.reload.incref).to eq(1)
       end
+
+      it "skips validations for previous years" do
+        lettings_log.update!(net_income_known: 2, incref: nil)
+        lettings_log.startdate = Time.zone.local(2021, 3, 3)
+        lettings_log.save!(validate: false)
+        task.invoke
+        expect(lettings_log.reload.incref).to eq(1)
+      end
     end
   end
 end