diff --git a/sample_app/Gemfile.lock b/sample_app/Gemfile.lock
index fc6bd39..1d49551 100644
--- a/sample_app/Gemfile.lock
+++ b/sample_app/Gemfile.lock
@@ -315,7 +315,9 @@ 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_magick (4.8.0)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
@@ -426,7 +428,7 @@ GEM
     turbolinks (5.1.1)
       turbolinks-source (~> 5.1)
     turbolinks-source (5.1.0)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uglifier (4.1.14)
       execjs (>= 0.3.0, < 3)