diff --git a/Gemfile.lock b/Gemfile.lock
index fefc2bc5c..372449350 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -128,8 +128,8 @@ GEM
       compass (~> 1.0.0)
       sass-rails (< 5.1)
       sprockets (< 4.0)
-    concurrent-ruby (1.1.7)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.9)
+    connection_pool (2.2.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.6)
@@ -507,11 +507,11 @@ GEM
     shoulda-context (1.2.2)
     shoulda-matchers (2.8.0)
       activesupport (>= 3.0.0)
-    sidekiq (5.0.3)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
+    sidekiq (5.2.8)
+      connection_pool (~> 2.2, >= 2.2.2)
+      rack (< 2.1.0)
       rack-protection (>= 1.5.0)
-      redis (~> 3.3, >= 3.3.3)
+      redis (>= 3.3.5, < 5)
     sidekiq-failures (1.0.0)
       sidekiq (>= 4.0.0)
     sidekiq-scheduler (2.1.6)