diff --git a/lib/tasks/set_export_collection_years.rake b/lib/tasks/set_export_collection_years.rake
new file mode 100644
index 000000000..badaab0eb
--- /dev/null
+++ b/lib/tasks/set_export_collection_years.rake
@@ -0,0 +1,8 @@
+desc "Set export collection years for lettings exports"
+task set_export_collection_years: :environment do
+  Export.where(collection: %w[2022 2023 2024 2025]).find_each do |export|
+    export.year = export.collection.to_i
+    export.collection = "lettings"
+    export.save!
+  end
+end
diff --git a/spec/lib/tasks/set_export_collection_years_spec.rb b/spec/lib/tasks/set_export_collection_years_spec.rb
new file mode 100644
index 000000000..76ff779b0
--- /dev/null
+++ b/spec/lib/tasks/set_export_collection_years_spec.rb
@@ -0,0 +1,41 @@
+require "rails_helper"
+require "rake"
+
+RSpec.describe "set_export_collection_years" do
+  describe ":set_export_collection_years", type: :task do
+    subject(:task) { Rake::Task["set_export_collection_years"] }
+
+    before do
+      Rake.application.rake_require("tasks/set_export_collection_years")
+      Rake::Task.define_task(:environment)
+      task.reenable
+    end
+
+    context "when the rake task is run" do
+      let!(:lettings_export_2023) { Export.create(collection: "2023", year: nil, started_at: Time.zone.now) }
+      let!(:lettings_export_2024) { Export.create(collection: "2024", year: nil, started_at: Time.zone.now) }
+      let!(:updated_lettings_export) { Export.create(collection: "lettings", year: 2023, started_at: Time.zone.now) }
+      let!(:organisations_export) { Export.create(collection: "organisations", year: nil, started_at: Time.zone.now) }
+      let!(:users_export) { Export.create(collection: "users", year: nil, started_at: Time.zone.now) }
+
+      it "correctly updates collection years" do
+        task.invoke
+
+        expect(lettings_export_2023.reload.collection).to eq("lettings")
+        expect(lettings_export_2023.year).to eq(2023)
+
+        expect(lettings_export_2024.reload.collection).to eq("lettings")
+        expect(lettings_export_2024.year).to eq(2024)
+
+        expect(updated_lettings_export.reload.collection).to eq("lettings")
+        expect(updated_lettings_export.year).to eq(2023)
+
+        expect(organisations_export.reload.collection).to eq("organisations")
+        expect(organisations_export.year).to eq(nil)
+
+        expect(users_export.reload.collection).to eq("users")
+        expect(users_export.year).to eq(nil)
+      end
+    end
+  end
+end