diff --git a/Gemfile b/Gemfile
index aa53f1b..749111a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -31,7 +31,7 @@ gem 'seed_dump'
 gem 'meta-tags'
 gem 'jssocials-rails', github: 'luciuschoi/jssocials-rails'
 gem 'pg'
-gem 'mini_magick', '~> 4.8'
+gem 'mini_magick', '~> 4.9'
 gem 'bootsnap', '>= 1.1.0', require: false
 gem 'webpacker', git: 'https://github.com/rails/webpacker.git'
 gem 'loaf'
diff --git a/Gemfile.lock b/Gemfile.lock
index d6f4dc9..b41e227 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -205,7 +205,7 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2018.0812)
     mimemagic (0.3.3)
-    mini_magick (4.9.2)
+    mini_magick (4.9.4)
     mini_mime (1.0.1)
     mini_portile2 (2.4.0)
     mini_racer (0.2.4)
@@ -369,7 +369,7 @@ DEPENDENCIES
   listen (>= 3.0.5, < 3.2)
   loaf
   meta-tags
-  mini_magick (~> 4.8)
+  mini_magick (~> 4.9)
   mini_racer
   pg
   puma (~> 3.11)