diff --git a/debian/patches/0021-loosen-sidekiq.patch b/debian/patches/0021-loosen-sidekiq.patch
deleted file mode 100644
index 87ef95b992..0000000000
--- a/debian/patches/0021-loosen-sidekiq.patch
+++ /dev/null
@@ -1,13 +0,0 @@
-Index: gitlab/Gemfile
-===================================================================
---- gitlab.orig/Gemfile
-+++ gitlab/Gemfile
-@@ -123,7 +123,7 @@ gem 'acts-as-taggable-on', '~> 3.4'
- 
- # Background jobs
- gem 'sinatra', '~> 1.4.4', require: nil
--gem 'sidekiq', '~> 4.0'
-+gem 'sidekiq', '~> 3.4'
- gem 'sidekiq-cron', '~> 0.4.0'
- gem 'redis-namespace'
- 
diff --git a/debian/patches/series b/debian/patches/series
index cd2cddd527..ea1187cb69 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -6,7 +6,6 @@ loosen-rails-version.patch
 0017-loosen-redcarpet.patch
 0018-loosen-rdoc.patch
 0020-loosen-unicorn.patch
-0021-loosen-sidekiq.patch
 0027-loosen-underscore-rails.patch
 0028-loosen-ace-rails-ap.patch
 0029-loosen-sass-rails.patch