diff --git a/Gemfile b/Gemfile
index 5cb96c2e..80945a55 100644
--- a/Gemfile
+++ b/Gemfile
@@ -90,7 +90,7 @@ gem 'nokogiri', '~> 1.13'
 
 gem 'airbrake', '~> 11.0'
 gem 'font-awesome-rails', '~> 4.7'
-gem 'sidekiq', '~> 4.2'
+gem 'sidekiq', '~> 5.2'
 gem 'data_uri', '~> 0.1'
 gem 'jquery-dotdotdot-rails', '~> 1.6'
 gem 'alternate_rails', git: 'https://github.com/Data-Liberation-Front/alternate-rails.git', ref: 'v4.2.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index 97eb0cf7..29108fa1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,8 +126,8 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     colorize (0.8.1)
-    concurrent-ruby (1.1.9)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.10)
+    connection_pool (2.2.5)
     coveralls (0.8.23)
       json (>= 1.8, < 3)
       simplecov (~> 0.16.1)
@@ -552,7 +552,7 @@ GEM
     rack-google-analytics (1.2.0)
       actionpack
       activesupport
-    rack-protection (2.0.8.1)
+    rack-protection (2.2.0)
       rack
     rack-test (0.6.3)
       rack (>= 1.0)
@@ -654,7 +654,7 @@ GEM
       rdf (~> 3.1)
     rdoc (6.4.0)
       psych (>= 4.0.0)
-    redis (3.3.1)
+    redis (4.6.0)
     ref (2.0.0)
     rest-client (2.0.2)
       http-cookie (>= 1.0.2, < 2.0)
@@ -704,11 +704,11 @@ GEM
       rdf-xsd (>= 2.2, < 4.0)
       sparql (>= 2.2, < 4.0)
       sxp (~> 1.0)
-    sidekiq (4.2.4)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
+    sidekiq (5.2.8)
+      connection_pool (~> 2.2, >= 2.2.2)
+      rack (< 2.1.0)
       rack-protection (>= 1.5.0)
-      redis (~> 3.2, >= 3.2.1)
+      redis (>= 3.3.5, < 5)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -844,7 +844,7 @@ DEPENDENCIES
   rubyzip (~> 2.3)
   sass-rails (~> 6.0)
   sdoc (~> 2.4)
-  sidekiq (~> 4.2)
+  sidekiq (~> 5.2)
   simplecov (~> 0.16)
   spring (~> 2.1)
   sqlite3 (~> 1.4)