diff --git a/README_API_GUIDE.md b/README_API_GUIDE.md
index 6cc41c6bb..58a103052 100644
--- a/README_API_GUIDE.md
+++ b/README_API_GUIDE.md
@@ -73,20 +73,6 @@ Global Street Address Lookups
 * **Terms of Service**: http://www.microsoft.com/maps/product/terms.html
 * **Limitations**: No country codes or state names. Must be used on "public-facing, non-password protected web sites," "in conjunction with Bing Maps or an application that integrates Bing Maps."
 
-### Data Science Toolkit (`:dstk`)
-
-Data Science Toolkit provides an API whose response format is like Google's but which can be set up as a privately hosted service.
-
-* **API key**: none
-* **Quota**: No quota if you are self-hosting the service.
-* **Region**: world
-* **SSL support**: ?
-* **Languages**: en
-* **Documentation**: http://www.datasciencetoolkit.org/developerdocs
-* **Terms of Service**: http://www.datasciencetoolkit.org/developerdocs#googlestylegeocoder
-* **Limitations**: No reverse geocoding.
-* **Notes**: If you are hosting your own DSTK server you will need to configure the host name, eg: `Geocoder.configure(lookup: :dstk, dstk: {host: "localhost:4567"})`.
-
 ### ESRI (`:esri`)
 
 * **API key**: optional (set `Geocoder.configure(esri: {api_key: ["client_id", "client_secret"]})`)
diff --git a/lib/geocoder/lookup.rb b/lib/geocoder/lookup.rb
index e915b7d4d..87523cae8 100644
--- a/lib/geocoder/lookup.rb
+++ b/lib/geocoder/lookup.rb
@@ -32,7 +32,6 @@ def all_services_with_http_requests
     def street_services
       @street_services ||= [
         :location_iq,
-        :dstk,
         :esri,
         :google,
         :google_premier,
diff --git a/lib/geocoder/lookups/dstk.rb b/lib/geocoder/lookups/dstk.rb
deleted file mode 100644
index f5c16cfc5..000000000
--- a/lib/geocoder/lookups/dstk.rb
+++ /dev/null
@@ -1,22 +0,0 @@
-# More information about the Data Science Toolkit can be found at:
-# http://www.datasciencetoolkit.org/. The provided APIs mimic the
-# Google geocoding api.
-
-require 'geocoder/lookups/google'
-require 'geocoder/results/dstk'
-
-module Geocoder::Lookup
-  class Dstk < Google
-
-    def name
-      "Data Science Toolkit"
-    end
-
-    private # ----------------------------------------------------------------
-
-    def base_query_url(query)
-      host = configuration[:host] || "www.datasciencetoolkit.org"
-      "#{protocol}://#{host}/maps/api/geocode/json?"
-    end
-  end
-end
diff --git a/lib/geocoder/results/dstk.rb b/lib/geocoder/results/dstk.rb
deleted file mode 100644
index ce98fe6a5..000000000
--- a/lib/geocoder/results/dstk.rb
+++ /dev/null
@@ -1,6 +0,0 @@
-require 'geocoder/results/google'
-
-module Geocoder::Result
-  class Dstk < Google
-  end
-end
\ No newline at end of file
diff --git a/test/test_helper.rb b/test/test_helper.rb
index b3e4301e4..cf63d39a2 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -196,14 +196,6 @@ def fixture_prefix
       end
     end
 
-    require 'geocoder/lookups/dstk'
-    class Dstk
-      private
-      def fixture_prefix
-        "google"
-      end
-    end
-
     require 'geocoder/lookups/location_iq'
     class LocationIq
       private
diff --git a/test/unit/lookups/dstk_test.rb b/test/unit/lookups/dstk_test.rb
deleted file mode 100644
index 8783ab9f4..000000000
--- a/test/unit/lookups/dstk_test.rb
+++ /dev/null
@@ -1,26 +0,0 @@
-# encoding: utf-8
-require 'test_helper'
-
-class DstkTest < GeocoderTestCase
-
-  def setup
-    super
-    Geocoder.configure(lookup: :dstk)
-  end
-
-  def test_dstk_result_components
-    result = Geocoder.search("Madison Square Garden, New York, NY").first
-    assert_equal "Manhattan", result.address_components_of_type(:sublocality).first['long_name']
-  end
-
-  def test_dstk_query_url
-    query = Geocoder::Query.new("Madison Square Garden, New York, NY")
-    assert_equal "http://www.datasciencetoolkit.org/maps/api/geocode/json?address=Madison+Square+Garden%2C+New+York%2C+NY&language=en&sensor=false", query.url
-  end
-
-  def test_dstk_query_url_with_custom_host
-    Geocoder.configure(dstk: {host: 'NOT_AN_ACTUAL_HOST'})
-    query = Geocoder::Query.new("Madison Square Garden, New York, NY")
-    assert_equal "http://NOT_AN_ACTUAL_HOST/maps/api/geocode/json?address=Madison+Square+Garden%2C+New+York%2C+NY&language=en&sensor=false", query.url
-  end
-end