diff --git a/centralized_logging/elk_rails_sample/app/Gemfile.lock b/centralized_logging/elk_rails_sample/app/Gemfile.lock
index cf373c0..fe2bb36 100644
--- a/centralized_logging/elk_rails_sample/app/Gemfile.lock
+++ b/centralized_logging/elk_rails_sample/app/Gemfile.lock
@@ -85,7 +85,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (0.9.2)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -178,7 +180,7 @@ GEM
     turbolinks (5.2.0)
       turbolinks-source (~> 5.2)
     turbolinks-source (5.2.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.11)
       thread_safe (~> 0.1)
     uglifier (4.1.19)
       execjs (>= 0.3.0, < 3)