diff --git a/Gemfile b/Gemfile
index 428f79c..d73ce88 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem 'jbuilder', '~> 2.5'
 gem 'bcrypt', '~> 3.1.12'
 gem 'bootsnap', '>= 1.1.0', require: false
 gem 'devise', '>= 4.6.0'
-gem 'sidekiq', '~> 5.2'
+gem 'sidekiq', '~> 6.4'
 gem 'haml', '~> 5.0'
 gem 'simple_form', '~> 4.0'
 gem 'simple-navigation', '~> 4.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index a13b856..4c74e0b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
     chartkick (3.2.0)
     chronic (0.10.2)
     concurrent-ruby (1.1.4)
-    connection_pool (2.2.2)
+    connection_pool (2.2.5)
     crass (1.0.4)
     devise (4.6.2)
       bcrypt (~> 3.0)
@@ -143,7 +143,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -160,8 +162,6 @@ GEM
     pg (1.1.3)
     puma (3.12.0)
     rack (2.0.6)
-    rack-protection (2.0.5)
-      rack
     rack-proxy (0.6.5)
       rack
     rack-test (1.1.0)
@@ -194,7 +194,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    redis (4.1.0)
+    redis (4.5.1)
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
@@ -220,10 +220,10 @@ GEM
       rspec-support (~> 3.8.0)
     rspec-support (3.8.0)
     ruby_dep (1.5.0)
-    sidekiq (5.2.3)
-      connection_pool (~> 2.2, >= 2.2.2)
-      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)
     simple-navigation (4.0.5)
       activesupport (>= 2.3.2)
     simple_form (4.1.0)
@@ -309,7 +309,7 @@ DEPENDENCIES
   responders (~> 2.4)
   rest-client (~> 2.0)
   rspec-rails (~> 3.8)
-  sidekiq (~> 5.2)
+  sidekiq (~> 6.4)
   simple-navigation (~> 4.0)
   simple_form (~> 4.0)
   spring