diff --git a/Gemfile.lock b/Gemfile.lock
index 1b854b57..16392c21 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -147,7 +147,9 @@ GEM
       thread_safe (~> 0.3, >= 0.3.1)
     metaclass (0.0.4)
     method_source (0.9.2)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.11.3)
@@ -185,7 +187,8 @@ GEM
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
     public_suffix (3.0.3)
-    puma (3.12.2)
+    puma (4.3.12)
+      nio4r (~> 2.0)
     rack (2.0.8)
     rack-protection (2.0.4)
       rack