diff --git a/Gemfile.lock b/Gemfile.lock
index b2d4fa4..0843030 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -126,7 +126,9 @@ 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 (1.0.2)
     mini_portile2 (2.4.0)
     minitest (5.14.0)
@@ -134,6 +136,7 @@ GEM
     multipart-post (2.0.0)
     mustache (1.0.5)
     mysql2 (0.4.10)
+    nio4r (2.5.7)
     nokogiri (1.10.8)
       mini_portile2 (~> 2.4.0)
     orm_adapter (0.5.0)
@@ -156,7 +159,8 @@ GEM
       interception (>= 0.5)
       pry
     public_suffix (3.0.2)
-    puma (3.12.4)
+    puma (4.3.8)
+      nio4r (~> 2.0)
     quiet_assets (1.1.0)
       railties (>= 3.1, < 5.0)
     rack (1.6.13)