diff --git a/Gemfile b/Gemfile
index 62eb453..0477f9d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -24,7 +24,7 @@ gem 'pg', '>= 0.18', '< 2.0'
 gem 'puma', '~> 3.11'
 gem 'rails', '~> 5.2.1', '>= 5.2.1.1'
 gem 'sass-rails', '~> 5.0'
-gem 'sidekiq', '~> 5.2.2'
+gem 'sidekiq', '~> 6.4.0'
 gem 'turbolinks', '~> 5'
 gem 'uglifier', '>= 1.3.0'
 
diff --git a/Gemfile.lock b/Gemfile.lock
index e318392..c50239f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.5)
-    connection_pool (2.2.2)
+    connection_pool (2.2.5)
     crass (1.0.4)
     database_cleaner (1.7.0)
     devise (4.6.2)
@@ -180,9 +180,7 @@ GEM
       byebug (~> 11.0)
       pry (~> 0.10)
     puma (3.12.1)
-    rack (2.0.7)
-    rack-protection (2.0.5)
-      rack
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.2.3)
@@ -214,7 +212,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    redis (4.1.1)
+    redis (4.5.1)
     request_store (1.4.1)
       rack (>= 1.4)
     responders (2.4.1)
@@ -286,11 +284,10 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (3.1.3)
       activesupport (>= 4.0.0)
-    sidekiq (5.2.7)
-      connection_pool (~> 2.2, >= 2.2.2)
-      rack (>= 1.5.0)
-      rack-protection (>= 1.5.0)
-      redis (>= 3.3.5, < 5)
+    sidekiq (6.4.0)
+      connection_pool (>= 2.2.2)
+      rack (~> 2.0)
+      redis (>= 4.2.0)
     simplecov (0.16.1)
       docile (~> 1.1)
       json (>= 1.8, < 3)
@@ -361,7 +358,7 @@ DEPENDENCIES
   rubocop-rspec
   sass-rails (~> 5.0)
   shoulda-matchers (~> 3.1)
-  sidekiq (~> 5.2.2)
+  sidekiq (~> 6.4.0)
   simplecov (~> 0.16.1)
   spring (~> 2.0, >= 2.0.2)
   table_print