diff --git a/Gemfile.lock b/Gemfile.lock
index 4eed543a12..670057f2f1 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -198,7 +198,9 @@ GEM
       mime-types (>= 1.16, < 4)
     method_source (0.8.2)
     mime-types (2.99.3)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_portile2 (2.1.0)
     minitest (5.9.1)
     multi_json (1.12.1)
@@ -338,11 +340,11 @@ GEM
     test_after_commit (1.1.0)
       activerecord (>= 3.2)
     thor (0.19.1)
-    thread_safe (0.3.5)
-    thread_safe (0.3.5-java)
+    thread_safe (0.3.6)
+    thread_safe (0.3.6-java)
     tilt (2.0.5)
     timecop (0.8.1)
-    tzinfo (1.2.2)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     unf (0.1.4)
       unf_ext