diff --git a/Gemfile.lock b/Gemfile.lock
index 75b854b706838b..077ce3c89dd6fa 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -233,7 +233,9 @@ 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 (2.1.0)
     minitest (5.10.1)
     multi_json (1.12.1)
@@ -280,7 +282,8 @@ GEM
     pry-rails (0.3.6)
       pry (>= 0.10.4)
     public_suffix (2.0.5)
-    puma (3.8.2)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     rabl (0.13.1)
       activesupport (>= 2.3.14)
     rack (2.0.1)