diff --git a/Gemfile.lock b/Gemfile.lock
index e8ea0f0d..af18ac75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -613,9 +613,8 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
-    concurrent-ruby (1.0.5-java)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.9)
+    connection_pool (2.2.5)
     countries (2.1.4)
       i18n_data (~> 0.8.0)
       money (~> 6.9)
@@ -714,10 +713,8 @@ GEM
     public_suffix (3.0.0)
     puma (3.9.1)
     puma (3.9.1-java)
-    rack (2.0.3)
+    rack (2.2.3)
     rack-cors (0.4.1)
-    rack-protection (1.5.3)
-      rack
     rack-proxy (0.6.5)
       rack
     rack-test (0.6.3)
@@ -760,7 +757,7 @@ GEM
     rb-fsevent (0.10.2)
     rb-inotify (0.9.10)
       ffi (>= 0.5.0, < 2)
-    redis (3.3.3)
+    redis (4.5.1)
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
@@ -796,11 +793,10 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    sidekiq (4.2.9)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
-      rack-protection (>= 1.5.0)
-      redis (~> 3.2, >= 3.2.1)
+    sidekiq (6.4.0)
+      connection_pool (>= 2.2.2)
+      rack (~> 2.0)
+      redis (>= 4.2.0)
     simple_form (3.5.0)
       actionpack (> 4, < 5.2)
       activemodel (> 4, < 5.2)