diff --git a/Gemfile.lock b/Gemfile.lock
index 52fceb6..9cf3dba 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -94,8 +94,8 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.5)
-    connection_pool (2.2.1)
+    concurrent-ruby (1.1.9)
+    connection_pool (2.2.5)
     crass (1.0.4)
     dalli (2.7.6)
     devise (4.5.0)
@@ -191,7 +191,9 @@ GEM
       mimemagic (~> 0.3.2)
     memcachier (0.0.2)
     method_source (0.9.0)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.8.0)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -214,10 +216,10 @@ GEM
       method_source (~> 0.9.0)
     public_suffix (3.0.1)
     puma (3.11.0)
-    rack (2.0.5)
+    rack (2.2.3)
     rack-cache (1.7.1)
       rack (>= 0.4)
-    rack-protection (2.0.4)
+    rack-protection (2.1.0)
       rack
     rack-proxy (0.6.5)
       rack
@@ -312,11 +314,10 @@ GEM
     shellany (0.0.1)
     shoulda-matchers (3.1.2)
       activesupport (>= 4.0.0)
-    sidekiq (5.0.5)
-      concurrent-ruby (~> 1.0)
-      connection_pool (~> 2.2, >= 2.2.0)
+    sidekiq (5.2.0)
+      connection_pool (~> 2.2, >= 2.2.2)
       rack-protection (>= 1.5.0)
-      redis (>= 3.3.4, < 5)
+      redis (>= 3.3.5, < 5)
     simplecov (0.15.1)
       docile (~> 1.1.0)
       json (>= 1.8, < 3)