diff --git a/Gemfile.lock b/Gemfile.lock
index c2db7f794..cb83aa939 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -187,7 +187,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     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)
@@ -238,7 +240,8 @@ GEM
       yard (~> 0.9.11)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    puma (3.11.4)
+    puma (4.3.11)
+      nio4r (~> 2.0)
     rack (2.0.8)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)