diff --git a/Gemfile.lock b/Gemfile.lock
index e53e43c1..3d897301 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -399,7 +399,9 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mimemagic (0.3.3)
+    mimemagic (0.3.10)
+      nokogiri (~> 1)
+      rake
     mini_magick (4.9.4)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
@@ -416,7 +418,7 @@ GEM
     net-scp (2.0.0)
       net-ssh (>= 2.6.5, < 6.0.0)
     net-ssh (5.2.0)
-    nio4r (2.3.1)
+    nio4r (2.5.7)
     nokogiri (1.10.9)
       mini_portile2 (~> 2.4.0)
     notiffany (0.1.1)
@@ -444,7 +446,7 @@ GEM
       binding_of_caller (>= 0.7)
       pry (>= 0.9.11)
     public_suffix (3.0.3)
-    puma (4.3.3)
+    puma (4.3.8)
       nio4r (~> 2.0)
     rack (2.1.1)
     rack-protection (2.0.5)