diff --git a/Gemfile b/Gemfile
index 03cb00832e4..e874c49e3e1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -137,7 +137,7 @@ gem 'rest-client'
 gem 'rinku'
 gem 'sanitize'
 gem 'sass'
-gem 'sidekiq', '2.15.1'
+gem 'sidekiq'
 gem 'sidekiq-failures'
 gem 'sinatra', require: nil
 gem 'slim'  # required for sidekiq-web
diff --git a/Gemfile.lock b/Gemfile.lock
index 17fc9285bf2..efd25616283 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -315,11 +315,11 @@ GEM
     shoulda-context (1.1.6)
     shoulda-matchers (2.5.0)
       activesupport (>= 3.0.0)
-    sidekiq (2.15.1)
-      celluloid (>= 0.15.1)
+    sidekiq (2.17.6)
+      celluloid (>= 0.15.2)
       connection_pool (>= 1.0.0)
       json
-      redis (>= 3.0.4)
+      redis (>= 3.0.6)
       redis-namespace (>= 1.3.1)
     sidekiq-failures (0.3.0)
       sidekiq (>= 2.14.0)
@@ -459,7 +459,7 @@ DEPENDENCIES
   sass-rails
   seed-fu-discourse
   shoulda
-  sidekiq (= 2.15.1)
+  sidekiq
   sidekiq-failures
   simple-rss
   simplecov