diff --git a/Gemfile b/Gemfile
index 397165f668f..c65ff814497 100644
--- a/Gemfile
+++ b/Gemfile
@@ -102,7 +102,7 @@ gem "acts-as-taggable-on"
 # Background jobs
 gem 'slim'
 gem 'sinatra', require: nil
-gem 'sidekiq'
+gem 'sidekiq', '2.17.0'
 
 # HTTP requests
 gem "httparty"
diff --git a/Gemfile.lock b/Gemfile.lock
index 1a0bce98ac5..956cf1c4984 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -653,7 +653,7 @@ DEPENDENCIES
   select2-rails
   settingslogic
   shoulda-matchers (~> 2.1.0)
-  sidekiq
+  sidekiq (= 2.17.0)
   simplecov
   sinatra
   six