diff --git a/Gemfile.lock b/Gemfile.lock
index c42dc8d..3a33cf7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -46,7 +46,7 @@ GEM
     builder (3.2.3)
     byebug (11.0.1)
     concurrent-ruby (1.1.5)
-    connection_pool (2.2.2)
+    connection_pool (2.2.5)
     crass (1.0.4)
     diff-lcs (1.3)
     erubi (1.8.0)
@@ -91,9 +91,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     pg (1.1.4)
     puma (3.12.1)
-    rack (2.0.6)
-    rack-protection (2.0.5)
-      rack
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)
@@ -131,7 +129,7 @@ GEM
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)
-    redis (4.1.0)
+    redis (4.6.0)
     rspec-core (3.8.0)
       rspec-support (~> 3.8.0)
     rspec-expectations (3.8.2)
@@ -162,11 +160,10 @@ GEM
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
     sax-machine (1.3.2)
-    sidekiq (5.2.5)
-      connection_pool (~> 2.2, >= 2.2.2)
-      rack (>= 1.5.0)
-      rack-protection (>= 1.5.0)
-      redis (>= 3.3.5, < 5)
+    sidekiq (6.4.2)
+      connection_pool (>= 2.2.2)
+      rack (~> 2.0)
+      redis (>= 4.2.0)
     spring (2.0.2)
       activesupport (>= 4.2)
     spring-watcher-listen (2.0.1)