diff --git a/Gemfile b/Gemfile
index 2b75239..33e23c6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -21,7 +21,7 @@ gem 'bulma-rails', '~> 0.7.1'
 gem 'record_tag_helper', '~> 1.0'
 gem 'pry-rails', '~> 0.3.6'
 gem 'pgcli-rails', '~> 0.3.0'
-gem 'mini_magick', '~> 4.8'
+gem 'mini_magick', '~> 4.9'
 gem 'carrierwave', '~> 1.2', '>= 1.2.2'
 gem 'administrate-field-carrierwave', '~> 0.3.2'
 gem 'cocoon', '~> 1.2', '>= 1.2.11'
diff --git a/Gemfile.lock b/Gemfile.lock
index df8237d..3733d0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -143,7 +143,7 @@ GEM
     mime-types (3.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2016.0521)
-    mini_magick (4.8.0)
+    mini_magick (4.9.4)
     mini_mime (1.0.0)
     mini_portile2 (2.3.0)
     minitest (5.11.3)
@@ -273,7 +273,7 @@ DEPENDENCIES
   jbuilder (~> 2.5)
   jquery-rails (~> 4.3, >= 4.3.3)
   listen (>= 3.0.5, < 3.2)
-  mini_magick (~> 4.8)
+  mini_magick (~> 4.9)
   pg (>= 0.18, < 2.0)
   pgcli-rails (~> 0.3.0)
   pry-rails (~> 0.3.6)