diff --git a/Gemfile.lock b/Gemfile.lock
index 902940e..2e0ae25 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -73,7 +73,7 @@ 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)
     erubi (1.8.0)
     execjs (2.7.0)
@@ -109,9 +109,7 @@ GEM
       mini_portile2 (~> 2.4.0)
     public_suffix (3.1.1)
     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)
@@ -142,7 +140,7 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.0)
       ffi (~> 1.0)
-    redis (4.1.2)
+    redis (4.5.1)
     regexp_parser (1.5.1)
     ruby_dep (1.5.0)
     rubyzip (1.2.3)
@@ -160,11 +158,10 @@ GEM
     selenium-webdriver (3.142.3)
       childprocess (>= 0.5, < 2.0)
       rubyzip (~> 1.2, >= 1.2.2)
-    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)
     spring (2.1.0)
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)