diff --git a/ee/db/fixtures/development/20_burndown.rb b/ee/db/fixtures/development/20_burndown.rb
index 2bb5ac623ee379afc0d1a5d774e46f7f3388ddaa..54179d75678482f908913e6a9bd7a071ee5344b9 100644
--- a/ee/db/fixtures/development/20_burndown.rb
+++ b/ee/db/fixtures/development/20_burndown.rb
@@ -93,7 +93,7 @@ def reopen_issues
     seeder = Gitlab::Seeder::Burndown.new(project)
     seeder.seed!
   else
-    Project.not_mass_generated.each do |project|
+    Parallel.each(Project.not_mass_generated.all, in_forks: 10) do |project|
       seeder = Gitlab::Seeder::Burndown.new(project)
       seeder.seed!
     end