diff --git a/Gemfile.lock b/Gemfile.lock
index f6248d3..94d5c09 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
       execjs
     coffee-script-source (1.12.2)
     concurrent-ruby (1.1.6)
-    connection_pool (2.2.3)
+    connection_pool (2.2.5)
     crack (0.4.3)
       safe_yaml (~> 1.0.0)
     crass (1.0.6)
@@ -174,9 +174,7 @@ GEM
     pusher-client (0.6.2)
       json
       websocket (~> 1.0)
-    rack (2.2.2)
-    rack-protection (2.0.8.1)
-      rack
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)
@@ -207,7 +205,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    redis (4.1.4)
+    redis (4.5.1)
     regexp_parser (1.7.0)
     rexml (3.2.4)
     rspec (3.9.0)
@@ -273,11 +271,10 @@ GEM
       ruby_http_client (~> 3.4)
     shoulda-matchers (4.3.0)
       activesupport (>= 4.2.0)
-    sidekiq (6.0.7)
+    sidekiq (6.4.0)
       connection_pool (>= 2.2.2)
       rack (~> 2.0)
-      rack-protection (>= 2.0.0)
-      redis (>= 4.1.0)
+      redis (>= 4.2.0)
     simple_calendar (2.2.6)
       rails (>= 3.0)
     simplecov (0.18.5)