diff --git a/lib/tasks/deployment/20221221115241_fix_geo_area_missing_source.rake b/lib/tasks/deployment/20221221115241_fix_geo_area_missing_source.rake
new file mode 100644
index 000000000..f94cc6999
--- /dev/null
+++ b/lib/tasks/deployment/20221221115241_fix_geo_area_missing_source.rake
@@ -0,0 +1,21 @@
+namespace :after_party do
+  desc 'Deployment task: fix_geo_area_missing_source'
+  task fix_geo_area_missing_source: :environment do
+    puts "Running deploy task 'fix_geo_area_missing_source'"
+
+    geo_areas = GeoArea.where(source: nil)
+    progress = ProgressReport.new(geo_areas.count)
+    geo_areas.find_each do |geo_area|
+      geo_area.source = GeoArea.sources.fetch(:selection_utilisateur)
+      geo_area.save!
+
+      progress.inc
+    end
+    progress.finish
+
+    # Update task as completed.  If you remove the line below, the task will
+    # run with every deploy (or every time you call after_party:run).
+    AfterParty::TaskRecord
+      .create version: AfterParty::TaskRecorder.new(__FILE__).timestamp
+  end
+end