diff --git a/Gemfile.lock b/Gemfile.lock
index e0a1ef3..5898dc2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -62,7 +62,7 @@ GEM
     cocaine (0.5.8)
       climate_control (>= 0.0.3, < 1.0)
     coderay (1.1.1)
-    concurrent-ruby (1.0.5)
+    concurrent-ruby (1.1.10)
     delayed_job (4.1.3)
       activesupport (>= 3.0, < 5.2)
     delayed_job_active_record (4.1.2)
@@ -128,7 +128,9 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_portile2 (2.2.0)
     minitest (5.10.3)
     mize (0.3.2)
@@ -175,7 +177,7 @@ GEM
       pry (~> 0.10)
     public_suffix (2.0.5)
     puma (3.9.1)
-    rack (2.0.3)
+    rack (2.2.4)
     rack-test (0.6.3)
       rack (>= 1.0)
     rails (5.1.2)
@@ -260,7 +262,7 @@ GEM
     spring-watcher-listen (2.0.1)
       listen (>= 2.7, < 4.0)
       spring (>= 1.2, < 3.0)
-    sprockets (3.7.1)
+    sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
     sprockets-rails (3.2.0)