diff --git a/.travis.yml b/.travis.yml
index 7c282d6..b7018a9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: ruby
 rvm:
-  - 1.9.2
   - 1.9.3
   - 2.0.0
   - 2.1.8
diff --git a/fastimage.gemspec b/fastimage.gemspec
index dd6760a..8d49323 100644
--- a/fastimage.gemspec
+++ b/fastimage.gemspec
@@ -20,7 +20,6 @@ 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_runtime_dependency 'addressable', '~> 2'
   s.add_development_dependency 'fakeweb', '~> 1.3'
   # Note rake 11 drops support for ruby 1.9.2
   s.add_development_dependency('rake', '~> 10.5')
diff --git a/lib/fastimage.rb b/lib/fastimage.rb
index 7e7b3c7..2413671 100644
--- a/lib/fastimage.rb
+++ b/lib/fastimage.rb
@@ -55,12 +55,18 @@
 #
 
 require 'net/https'
-require 'addressable/uri'
 require 'delegate'
 require 'pathname'
 require 'zlib'
 require 'base64'
+require 'uri'
 
+# see http://stackoverflow.com/questions/5208851/i/41048816#41048816
+if RUBY_VERSION < "2.2"
+  module URI
+    DEFAULT_PARSER = Parser.new(:HOSTNAME => "(?:(?:[a-zA-Z\\d](?:[-\\_a-zA-Z\\d]*[a-zA-Z\\d])?)\\.)*(?:[a-zA-Z](?:[-\\_a-zA-Z\\d]*[a-zA-Z\\d])?)\\.?")
+  end
+end
 
 class FastImage
   attr_reader :size, :type, :content_length, :orientation
@@ -190,8 +196,8 @@ class FastImage
       fetch_using_base64(uri)
     else
       begin
-        @parsed_uri = Addressable::URI.parse(uri)
-      rescue Addressable::URI::InvalidURIError
+        @parsed_uri = URI.parse(uri)
+      rescue URI::InvalidURIError
         fetch_using_file_open
       else
         if @parsed_uri.scheme == "http" || @parsed_uri.scheme == "https"
@@ -241,14 +247,14 @@ class FastImage
       if res.is_a?(Net::HTTPRedirection) && @redirect_count < 4
         @redirect_count += 1
         begin
-          newly_parsed_uri = Addressable::URI.parse(res['Location'])
+          newly_parsed_uri = URI.parse(res['Location'])
           # The new location may be relative - check for that
           if newly_parsed_uri.scheme != "http" && newly_parsed_uri.scheme != "https"
             @parsed_uri.path = res['Location']
           else
             @parsed_uri = newly_parsed_uri
           end
-        rescue Addressable::URI::InvalidURIError
+        rescue URI::InvalidURIError
         else
           fetch_using_http_from_parsed_uri
           break
@@ -289,11 +295,11 @@ class FastImage
   def proxy_uri
     begin
       if @options[:proxy]
-        proxy = Addressable::URI.parse(@options[:proxy])
+        proxy = URI.parse(@options[:proxy])
       else
-        proxy = ENV['http_proxy'] && ENV['http_proxy'] != "" ? Addressable::URI.parse(ENV['http_proxy']) : nil
+        proxy = ENV['http_proxy'] && ENV['http_proxy'] != "" ? URI.parse(ENV['http_proxy']) : nil
       end
-    rescue Addressable::URI::InvalidURIError
+    rescue URI::InvalidURIError
       proxy = nil
     end
     proxy
@@ -303,9 +309,9 @@ class FastImage
     proxy = proxy_uri
 
     if proxy
-      @http = Net::HTTP::Proxy(proxy.host, proxy.port).new(@parsed_uri.host, @parsed_uri.inferred_port)
+      @http = Net::HTTP::Proxy(proxy.host, proxy.port).new(@parsed_uri.host, @parsed_uri.port)
     else
-      @http = Net::HTTP.new(@parsed_uri.host, @parsed_uri.inferred_port)
+      @http = Net::HTTP.new(@parsed_uri.host, @parsed_uri.port)
     end
     @http.use_ssl = (@parsed_uri.scheme == "https")
     @http.verify_mode = OpenSSL::SSL::VERIFY_NONE
diff --git a/test/test.rb b/test/test.rb
index 3f3ae39..34edbe5 100644
--- a/test/test.rb
+++ b/test/test.rb
@@ -375,5 +375,8 @@ class FastImageTest < Test::Unit::TestCase
     assert_raises(FastImage::ImageFetchFailure) do
       FastImage.type("data:", :raise_on_failure => true)
     end
+  
+  def test_should_work_with_domains_with_underscores
+    assert_equal :gif, FastImage.type("http://foo_bar.inbro.net/images/p.gif")
   end
 end