diff --git a/Gemfile b/Gemfile
index 8627c685..7c1eb7f1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -27,7 +27,7 @@ gem 'paper_trail'
 # for upload management
 gem 'carrierwave'
 gem 'carrierwave-bombshelter'
-gem 'mimemagic', '~> 0.3.6'
+gem 'mimemagic'
 gem 'mini_magick'
 
 # for internationalizing
diff --git a/Gemfile.lock b/Gemfile.lock
index d0f78ee9..d024ba78 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -762,7 +762,6 @@ DEPENDENCIES
   recaptcha
   redcarpet
   responders (~> 2.0)
-  rexml (~> 3.2)
   rolify
   rqrcode
   rspec-activemodel-mocks