diff --git a/paperclip.gemspec b/paperclip.gemspec
index 94d8e6685..1daea871a 100644
--- a/paperclip.gemspec
+++ b/paperclip.gemspec
@@ -28,7 +28,7 @@ Gem::Specification.new do |s|
   s.add_dependency('activesupport', '>= 4.2.0')
   s.add_dependency('terrapin', '~> 0.6.0')
   s.add_dependency('mime-types')
-  s.add_dependency('mimemagic', '~> 0.3.0')
+  s.add_dependency('mimemagic', '~> 0.3.7')
 
   s.add_development_dependency('activerecord', '>= 4.2.0')
   s.add_development_dependency('shoulda')