diff --git a/fastimage.gemspec b/fastimage.gemspec
index 94e6438..4e3823d 100644
--- a/fastimage.gemspec
+++ b/fastimage.gemspec
@@ -22,7 +22,7 @@ Gem::Specification.new do |s|
   s.require_paths = ["lib"]
   s.rubygems_version = %q{1.3.6}
   s.summary = %q{FastImage - Image info fast}
-  s.add_dependency 'base64', '~> 0.1'
+  s.add_dependency 'base64'
   s.add_development_dependency 'fakeweb-fi', '~> 1.3'
   # Note rake 11 drops support for ruby 1.9.2
   s.add_development_dependency('rake', ">= 10.5")