diff --git a/Gemfile.lock b/Gemfile.lock
index 0d606c6..e0b6b84 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -189,7 +189,9 @@ 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_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -209,7 +211,8 @@ GEM
       request_store (~> 1.1)
     pg (1.0.0)
     public_suffix (3.0.3)
-    puma (3.11.4)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     pundit (1.1.0)
       activesupport (>= 3.0.0)
     rack (2.0.6)