diff --git a/Gemfile.lock b/Gemfile.lock
index 15ef64d..3e8149c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -143,7 +143,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     mini_racer (0.2.4)
@@ -170,7 +172,8 @@ GEM
       method_source (~> 0.9.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    puma (3.12.0)
+    puma (4.3.8)
+      nio4r (~> 2.0)
     rack (2.0.8)
     rack-attack (5.4.2)
       rack (>= 1.0, < 3)