diff --git a/Gemfile.lock b/Gemfile.lock
index c1a7839..b04e2ed 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -130,7 +130,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2019.0331)
-    mimemagic (0.3.3)
+    mimemagic (0.4.3)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.3)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -156,6 +158,7 @@ GEM
       mongoid
       mongoid_criteria_filter
     mysql2 (0.3.21)
+    nio4r (2.5.8)
     nokogiri (1.10.3)
       mini_portile2 (~> 2.4.0)
     origin (2.3.1)
@@ -163,7 +166,8 @@ GEM
     pry (0.12.2)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    puma (3.12.1)
+    puma (5.6.2)
+      nio4r (~> 2.0)
     rack (1.6.11)
     rack-test (0.6.3)
       rack (>= 1.0)