diff --git a/Gemfile.lock b/Gemfile.lock
index 037b3d5..7fd7325 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -35,8 +35,6 @@ GEM
     carrierwave (0.6.2)
       activemodel (>= 3.2.0)
       activesupport (>= 3.2.0)
-    celluloid (0.11.1)
-      timers (>= 1.0.0)
     client_side_validations (3.2.0.beta.6)
     client_side_validations-simple_form (2.0.0.beta.2)
       client_side_validations (~> 3.2.0.beta.6)
@@ -51,7 +49,7 @@ GEM
     coffee-script-source (1.3.3)
     columnize (0.3.6)
     commonjs (0.2.6)
-    connection_pool (0.9.2)
+    connection_pool (2.2.5)
     daemons (1.1.9)
     debugger (1.2.0)
       columnize (>= 0.3.1)
@@ -100,7 +98,7 @@ GEM
       treetop (~> 1.4.8)
     method_source (0.8)
     mime-types (1.19)
-    multi_json (1.3.6)
+    multi_json (1.15.0)
     multipart-post (1.1.5)
     oauth (0.4.6)
     oauth2 (0.8.0)
@@ -147,6 +145,8 @@ GEM
     rack-openid (1.3.1)
       rack (>= 1.1.0)
       ruby-openid (>= 2.1.8)
+    rack-protection (2.1.0)
+      rack
     rack-ssl (1.3.2)
       rack
     rack-test (0.6.1)
@@ -169,7 +169,7 @@ GEM
     rake (0.9.2.2)
     rdoc (3.12)
       json (~> 1.4)
-    redis (3.0.1)
+    redis (4.5.1)
     redis-actionpack (3.2.3)
       actionpack (~> 3.2.3)
       redis-rack (~> 1.4.0)
@@ -177,8 +177,6 @@ GEM
     redis-activesupport (3.2.3)
       activesupport (~> 3.2.3)
       redis-store (~> 1.1.0)
-    redis-namespace (1.2.1)
-      redis (~> 3.0.0)
     redis-rack (1.4.2)
       rack (~> 1.4.1)
       redis-store (~> 1.1.0)
@@ -197,12 +195,11 @@ GEM
       railties (~> 3.2.0)
       sass (>= 3.1.10)
       tilt (~> 1.3)
-    sidekiq (2.2.0)
-      celluloid (~> 0.11.1)
-      connection_pool (~> 0.9.2)
-      multi_json (~> 1)
-      redis (~> 3)
-      redis-namespace
+    sidekiq (5.2.8)
+      connection_pool (~> 2.2, >= 2.2.2)
+      rack (< 2.1.0)
+      rack-protection (>= 1.5.0)
+      redis (>= 3.3.5, < 5)
     simple_form (2.0.2)
       actionpack (~> 3.0)
       activemodel (~> 3.0)
@@ -220,7 +217,6 @@ GEM
       rack (>= 1.0.0)
     thor (0.16.0)
     tilt (1.3.3)
-    timers (1.0.1)
     treetop (1.4.10)
       polyglot
       polyglot (>= 0.3.1)