diff --git a/Gemfile.lock b/Gemfile.lock
index 1b4acb6..d0c18f6 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.2)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -137,7 +139,8 @@ GEM
       pry (~> 0.10)
     pry-rails (0.3.6)
       pry (>= 0.10.4)
-    puma (3.12.0)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     rack (2.0.5)
     rack-proxy (0.6.4)
       rack