diff --git a/CHANGELOG.md b/CHANGELOG.md
index f292b8a..d1b9f91 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,7 @@
 - Removed mapping of `id` to `_id` with `order` option
 - Removed `wordnet` option
 - Removed `elasticsearch` dependency
+- Dropped support for Elasticsearch 6
 - Dropped support for Ruby < 2.6 and Active Record < 5.2
 - Dropped support for NoBrainer and Cequel
 - Dropped support for `faraday_middleware-aws-signers-v4` (use `faraday_middleware-aws-sigv4` instead)
diff --git a/lib/searchkick.rb b/lib/searchkick.rb
index 681aa7c..b609f20 100644
--- a/lib/searchkick.rb
+++ b/lib/searchkick.rb
@@ -123,14 +123,6 @@ module Searchkick
     Gem::Version.new(server_version.split("-")[0]) < Gem::Version.new(version.split("-")[0])
   end
 
-  # memoize for performance
-  def self.server_below7?
-    unless defined?(@server_below7)
-      @server_below7 = server_below?("7.0.0")
-    end
-    @server_below7
-  end
-
   def self.search(term = "*", model: nil, **options, &block)
     options = options.dup
     klass = model
diff --git a/lib/searchkick/index_options.rb b/lib/searchkick/index_options.rb
index 09a5670..6dca436 100644
--- a/lib/searchkick/index_options.rb
+++ b/lib/searchkick/index_options.rb
@@ -8,10 +8,6 @@ module Searchkick
 
     def index_options
       custom_mapping = options[:mappings] || {}
-      if below70? && custom_mapping.keys.map(&:to_sym).include?(:properties)
-        # add type
-        custom_mapping = {index_type => custom_mapping}
-      end
 
       if options[:mappings] && !options[:merge_mappings]
         settings = options[:settings] || {}
@@ -167,12 +163,10 @@ module Searchkick
         settings[:similarity] = {default: {type: options[:similarity]}}
       end
 
-      unless below62?
-        settings[:index] = {
-          max_ngram_diff: 49,
-          max_shingle_diff: 4
-        }
-      end
+      settings[:index] = {
+        max_ngram_diff: 49,
+        max_shingle_diff: 4
+      }
 
       if options[:case_sensitive]
         settings[:analysis][:analyzer].each do |_, analyzer|
@@ -467,10 +461,6 @@ module Searchkick
         ]
       }
 
-      if below70?
-        mappings = {index_type => mappings}
-      end
-
       mappings
     end
 
@@ -558,14 +548,6 @@ module Searchkick
       :searchkick_index
     end
 
-    def below62?
-      Searchkick.server_below?("6.2.0")
-    end
-
-    def below70?
-      Searchkick.server_below?("7.0.0")
-    end
-
     def below73?
       Searchkick.server_below?("7.3.0")
     end
diff --git a/lib/searchkick/query.rb b/lib/searchkick/query.rb
index 3c6ecfb..c14cf4c 100644
--- a/lib/searchkick/query.rb
+++ b/lib/searchkick/query.rb
@@ -384,11 +384,6 @@ module Searchkick
 
             if field.start_with?("*.")
               q2 = qs.map { |q| {multi_match: q.merge(fields: [field], type: match_type == :match_phrase ? "phrase" : "best_fields")} }
-              if below61?
-                q2.each do |q|
-                  q[:multi_match].delete(:fuzzy_transpositions)
-                end
-              end
             else
               q2 = qs.map { |q| {match_type => {field => q}} }
             end
@@ -1141,21 +1136,13 @@ module Searchkick
     end
 
     def track_total_hits?
-      (searchkick_options[:deep_paging] && !below70?) || body_options[:track_total_hits]
+      searchkick_options[:deep_paging] || body_options[:track_total_hits]
     end
 
     def body_options
       options[:body_options] || {}
     end
 
-    def below61?
-      Searchkick.server_below?("6.1.0")
-    end
-
-    def below70?
-      Searchkick.server_below?("7.0.0")
-    end
-
     def below73?
       Searchkick.server_below?("7.3.0")
     end
diff --git a/lib/searchkick/record_data.rb b/lib/searchkick/record_data.rb
index ead2bde..94dda16 100644
--- a/lib/searchkick/record_data.rb
+++ b/lib/searchkick/record_data.rb
@@ -39,7 +39,6 @@ module Searchkick
         _index: index.name,
         _id: search_id
       }
-      data[:_type] = document_type if Searchkick.server_below7?
       data[:routing] = record.search_routing if record.respond_to?(:search_routing)
       data
     end
diff --git a/test/geo_shape_test.rb b/test/geo_shape_test.rb
index f4be296..cc531bb 100644
--- a/test/geo_shape_test.rb
+++ b/test/geo_shape_test.rb
@@ -31,23 +31,6 @@ class GeoShapeTest < Minitest::Test
     ]
   end
 
-  def test_circle
-    # https://github.com/elastic/elasticsearch/issues/39237
-    skip unless Searchkick.server_below?("6.6.0")
-
-    assert_search "*", ["Region A"], {
-      where: {
-        territory: {
-          geo_shape: {
-            type: "circle",
-            coordinates: {lat: 28.0, lon: 38.0},
-            radius: "444000m"
-          }
-        }
-      }
-    }
-  end
-
   def test_envelope
     assert_search "*", ["Region A"], {
       where: {
@@ -144,23 +127,6 @@ class GeoShapeTest < Minitest::Test
     }
   end
 
-  def test_contains
-    # CONTAINS query relation not supported
-    skip unless Searchkick.server_below?("6.6.0")
-
-    assert_search "*", ["Region C"], {
-      where: {
-        territory: {
-          geo_shape: {
-            type: "envelope",
-            relation: "contains",
-            coordinates: [[12, 13], [13, 12]]
-          }
-        }
-      }
-    }
-  end
-
   def test_latlon
     assert_search "*", ["Region A"], {
       where: {
diff --git a/test/index_test.rb b/test/index_test.rb
index e1e40a6..7962a7f 100644
--- a/test/index_test.rb
+++ b/test/index_test.rb
@@ -59,7 +59,6 @@ class IndexTest < Minitest::Test
     store_names ["Dollar Tree"], Store
     assert_equal ["Dollar Tree"], Store.search(body: {query: {match: {name: "dollar"}}}).map(&:name)
     mapping = Store.search_index.mapping.values.first["mappings"]
-    mapping = mapping["store"] if Searchkick.server_below?("7.0.0")
     assert_equal "text", mapping["properties"]["name"]["type"]
   end
 
diff --git a/test/language_test.rb b/test/language_test.rb
index 04f39f1..211a966 100644
--- a/test/language_test.rb
+++ b/test/language_test.rb
@@ -79,7 +79,7 @@ class LanguageTest < Minitest::Test
   end
 
   def test_korean2
-    skip if Searchkick.server_below?("6.4.0") || ci?
+    skip if ci?
 
     # requires https://www.elastic.co/guide/en/elasticsearch/plugins/7.4/analysis-nori.html
     with_options({language: "korean2"}) do
diff --git a/test/match_test.rb b/test/match_test.rb
index f3baa01..dc977b3 100644
--- a/test/match_test.rb
+++ b/test/match_test.rb
@@ -34,8 +34,6 @@ class MatchTest < Minitest::Test
   end
 
   def test_percent
-    # Note: "2% Milk" doesn't get matched in ES below 5.1.1
-    # This could be a bug since it has an edit distance of 1
     store_names ["1% Milk", "Whole Milk"]
     assert_search "1%", ["1% Milk"]
   end
diff --git a/test/routing_test.rb b/test/routing_test.rb
index 9484165..49faba5 100644
--- a/test/routing_test.rb
+++ b/test/routing_test.rb
@@ -8,9 +8,6 @@ class RoutingTest < Minitest::Test
 
   def test_mappings
     mappings = Store.searchkick_index.index_options[:mappings]
-    if Searchkick.server_below?("7.0.0")
-      mappings = mappings[:store]
-    end
     assert_equal mappings[:_routing], required: true
   end
 
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