diff --git a/Gemfile b/Gemfile
index 162301e..d1f2c61 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ gem 'pg',  '0.20.0'
 gem 'bcrypt',                  '3.1.12'
 gem 'faker',                   '1.7.3'
 gem 'carrierwave',             '1.2.2'
-gem 'mini_magick',             '4.7.0'
+gem 'mini_magick',             '4.9.4'
 gem 'will_paginate',           '3.1.6'
 gem 'bootstrap-will_paginate', '1.0.0'
 gem 'bootstrap-sass',          '3.3.7'
diff --git a/Gemfile.lock b/Gemfile.lock
index e9c9260..af48d13 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -278,7 +278,7 @@ GEM
     mime-types (3.2.2)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
-    mini_magick (4.7.0)
+    mini_magick (4.9.4)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     minitest (5.10.3)
@@ -419,7 +419,7 @@ DEPENDENCIES
   jbuilder (= 2.7.0)
   jquery-rails (= 4.3.1)
   listen (= 3.1.5)
-  mini_magick (= 4.7.0)
+  mini_magick (= 4.9.4)
   minitest (= 5.10.3)
   minitest-reporters (= 1.1.14)
   pg (= 0.20.0)