diff --git a/Gemfile b/Gemfile
index ed84c00..8bcdfc3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ ruby '2.5.8'
 gem 'travis-support',  git: 'https://github.com/travis-ci/travis-support', ref: '113cff17fe383bb72fcfae3a97a8ce98c228342f'
 gem 'travis-config',   '~> 1.0.0'
 
-gem 'sidekiq',         '~> 4.0.0'
+gem 'sidekiq',         '~> 5.2.10'
 gem 'redis-namespace'
 
 gem 'puma'
diff --git a/Gemfile.lock b/Gemfile.lock
index a8125b6..43c4890 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,8 +24,8 @@ GEM
     avl_tree (1.2.1)
       atomic (~> 1.1)
     coderay (1.1.2)
-    concurrent-ruby (1.0.5)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.10)
+    connection_pool (2.3.0)
     diff-lcs (1.3)
     faraday (0.15.0)
       multipart-post (>= 1.2, < 3)
@@ -58,7 +58,7 @@ GEM
     rack-test (1.0.0)
       rack (>= 1.0, < 3)
     rake (12.3.3)
-    redis (3.3.5)
+    redis (4.5.1)
     redis-namespace (1.6.0)
       redis (>= 3.0.4)
     rspec (2.99.0)
@@ -71,10 +71,11 @@ GEM
     rspec-mocks (2.99.4)
     sentry-raven (2.7.3)
       faraday (>= 0.7.6, < 1.0)
-    sidekiq (4.0.2)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
-      redis (~> 3.2, >= 3.2.1)
+    sidekiq (5.2.10)
+      connection_pool (~> 2.2, >= 2.2.2)
+      rack (~> 2.0)
+      rack-protection (>= 1.5.0)
+      redis (~> 4.5, < 4.6.0)
     sinatra (2.0.3)
       mustermann (~> 1.0)
       rack (~> 2.0)
@@ -106,7 +107,7 @@ DEPENDENCIES
   redis-namespace
   rspec (~> 2.9)
   sentry-raven
-  sidekiq (~> 4.0.0)
+  sidekiq (~> 5.2.10)
   sinatra (~> 2.0.3)
   timecop
   travis-config (~> 1.0.0)