diff --git a/Gemfile.lock b/Gemfile.lock
index a2d6682..b0a0b2d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -41,8 +41,7 @@ GEM
     arel (7.1.4)
     builder (3.2.3)
     byebug (9.0.6)
-    concurrent-ruby (1.0.5)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.8)
     erubis (2.7.0)
     ffi (1.9.18)
     globalid (0.4.0)
@@ -66,10 +65,8 @@ GEM
       mini_portile2 (~> 2.1.0)
     pg (0.20.0)
     puma (3.9.1)
-    rack (2.0.3)
+    rack (2.2.3)
     rack-cors (0.4.1)
-    rack-protection (2.0.0)
-      rack
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.0.3)
@@ -99,13 +96,7 @@ GEM
     rb-fsevent (0.9.8)
     rb-inotify (0.9.8)
       ffi (>= 0.5.0)
-    redis (3.3.3)
-    sidekiq (5.0.2)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
-      rack-protection (>= 1.5.0)
-      redis (~> 3.3, >= 3.3.3)
-    sprockets (3.7.1)
+    sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.0)
@@ -130,7 +121,6 @@ DEPENDENCIES
   puma (~> 3.0)
   rack-cors
   rails (~> 5.0.3)
-  sidekiq (= 5.0.2)
   tzinfo-data
 
 BUNDLED WITH