diff --git a/.travis.yml b/.travis.yml
index 7a8d246..6d1e02d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,9 +3,9 @@ notifications:
   recipients:
     - support@roundscope.com
 otp_release:
-  - R16B
+  - 17.0
 before_install:
   - git clone https://github.com/elixir-lang/elixir
-  - cd elixir && git checkout v0.11.2 && make && cd ..
+  - cd elixir && git checkout stable && make && cd ..
 before_script: "export PATH=`pwd`/elixir/bin:$PATH"
 script: "MIX_ENV=test mix do deps.get, compile, travis"
diff --git a/lib/tirexs/bulk.ex b/lib/tirexs/bulk.ex
index 7b0d36a..a8848ff 100644
--- a/lib/tirexs/bulk.ex
+++ b/lib/tirexs/bulk.ex
@@ -76,7 +76,7 @@ defmodule Tirexs.Bulk do
   end
 
   def get_id_from_document(document) do
-    document[:id] || document["id"] || document[:_id] || document["_id"]
+    document[:id] || document[:_id]
   end
 
   def convert_document_to_json(document) do
@@ -84,7 +84,7 @@ defmodule Tirexs.Bulk do
   end
 
   def get_type_from_document(document) do
-    document[:_type] || document["_type"] || document[:type] || document["type"] || "document"
+    document[:_type] || document[:type] || "document"
   end
 
 	def match(document) do
@@ -96,4 +96,4 @@ defmodule Tirexs.Bulk do
 		end
 	end
 
-end
\ No newline at end of file
+end
diff --git a/lib/tirexs/elastic_search.ex b/lib/tirexs/elastic_search.ex
index 33fc3ed..911a577 100644
--- a/lib/tirexs/elastic_search.ex
+++ b/lib/tirexs/elastic_search.ex
@@ -38,7 +38,8 @@ defmodule Tirexs.ElasticSearch do
 
   def post(query_url, body, config) do
     unless body == [], do: body = to_string(body)
-    do_request(make_url(query_url, config), :post, body)
+    url = make_url(query_url, config)
+    do_request(url, :post, body)
   end
 
   @doc false
@@ -79,7 +80,7 @@ defmodule Tirexs.ElasticSearch do
     end
   end
 
-  def get_body_json(body), do: JSEX.decode!(to_string(body))
+  def get_body_json(body), do: JSEX.decode!(to_string(body), [{:labels, :atom}])
 
   def make_url(query_url, config) do
     if config.port == nil || config.port == 80 do
@@ -90,4 +91,4 @@ defmodule Tirexs.ElasticSearch do
   end
 
   defp make_headers, do: [{'Content-Type', 'application/json'}]
-end
\ No newline at end of file
+end
diff --git a/lib/tirexs/manage.ex b/lib/tirexs/manage.ex
index 83a0879..6160a43 100644
--- a/lib/tirexs/manage.ex
+++ b/lib/tirexs/manage.ex
@@ -2,8 +2,7 @@ defmodule Tirexs.Manage do
   import Tirexs.DSL.Logic
 
   def count(options, settings) do
-    body = JSEX.encode!(options[:filter] || options[:query] || [])
-    Tirexs.ElasticSearch.post(make_url("_count", options), body, settings)
+    execute_get_if_body_empty_and_post_otherwise("_count", options, settings)
   end
 
   def delete_by_query(options, settings) do
@@ -17,12 +16,7 @@ defmodule Tirexs.Manage do
   end
 
   def validate(options, settings) do
-    body = JSEX.encode!(options[:filter] || options[:query] || [])
-    if body == JSEX.encode!([]) do
-      Tirexs.ElasticSearch.get(make_url("_validate/query", options), settings)
-    else
-      Tirexs.ElasticSearch.post(make_url("_validate/query", options), body, settings)
-    end
+    execute_get_if_body_empty_and_post_otherwise("_validate/query", options, settings)
   end
 
   def explain(options, settings) do
@@ -78,4 +72,17 @@ defmodule Tirexs.Manage do
     options = Dict.delete(options, h)
     delete_options(t, options)
   end
+
+  defp execute_get_if_body_empty_and_post_otherwise(url_suffix, options, settings) do
+    body =
+      cond do
+        options[:filter] -> options[:filter]
+        options[:query] -> [query: options[:query]]
+        true -> []
+      end
+    case JSEX.encode!(body) do
+      "[]" -> Tirexs.ElasticSearch.get(make_url(url_suffix, options), settings)
+      body -> Tirexs.ElasticSearch.post(make_url(url_suffix, options), body, settings)
+    end
+  end
 end
\ No newline at end of file
diff --git a/lib/tirexs/percolator.ex b/lib/tirexs/percolator.ex
index 9338fd4..674525d 100644
--- a/lib/tirexs/percolator.ex
+++ b/lib/tirexs/percolator.ex
@@ -36,7 +36,7 @@ defmodule Tirexs.Percolator do
       "#{definition[:index]}/#{definition[:name]}"
     end
 
-    { url, json } = { "_percolator/#{url}", to_resource_json(definition) }
+    { url, json } = { ".percolator/#{url}", to_resource_json(definition) }
     Tirexs.ElasticSearch.put(url, json, settings)
   end
 
diff --git a/lib/tirexs/query.ex b/lib/tirexs/query.ex
index 1b42bd1..ce8c79a 100644
--- a/lib/tirexs/query.ex
+++ b/lib/tirexs/query.ex
@@ -422,11 +422,11 @@ defmodule Tirexs.Query do
     { url, json } = { "#{url}/_search" <> to_param(opts, ""), to_resource_json(definition) }
     case Tirexs.ElasticSearch.post(url, json, settings) do
       {:ok, _, result} ->
-        count     = result["hits"]["total"]
-        hits      = result["hits"]["hits"]
-        facets    = result["facets"]
-        max_score = result["hits"]["max_score"]
-        scroll_id = result["_scroll_id"]
+        count     = result[:hits][:total]
+        hits      = result[:hits][:hits]
+        facets    = result[:facets]
+        max_score = result[:hits][:max_score]
+        scroll_id = result[:_scroll_id]
         Result.new(count: count, hits: hits, facets: facets, max_score: max_score, _scroll_id: scroll_id)
       result  -> result
     end
@@ -434,4 +434,4 @@ defmodule Tirexs.Query do
 
   @doc false
   def to_resource_json(definition), do: JSEX.encode!(definition[:search])
-end
\ No newline at end of file
+end
diff --git a/mix.lock b/mix.lock
index 1604871..08e1808 100644
--- a/mix.lock
+++ b/mix.lock
@@ -1,2 +1,2 @@
-[ "jsex": {:git, "git://github.com/talentdeficit/jsex.git", "65aa6ae7c1543a0c4e83032c04626af7be7a7f3e", []},
-  "jsx": {:git, "git://github.com/talentdeficit/jsx.git", "e50af6e109cb03bd26acf715cbc77de746507d1d", [tag: "v1.4.3"]} ]
+%{"jsex": {:git, "git://github.com/talentdeficit/jsex.git", "03ad4ff0967331afd01464857d41e5e497ed198c", []},
+  "jsx": {:git, "git://github.com/talentdeficit/jsx.git", "507fa4c41db33c81e925ab53f4d789d234aaff2f", [tag: "v2.0.1"]}}
diff --git a/test/acceptances/bulk_test.exs b/test/acceptances/bulk_test.exs
index c5ed9d6..c38d408 100644
--- a/test/acceptances/bulk_test.exs
+++ b/test/acceptances/bulk_test.exs
@@ -27,7 +27,7 @@ defmodule Acceptances.BulkTest do
 
         Tirexs.Manage.refresh("bear_test", settings)
         {_, _, body} = Tirexs.ElasticSearch.get("bear_test/_count", settings)
-        assert body["count"] == 11
+        assert body[:count] == 11
   end
 
   test :update do
@@ -41,7 +41,7 @@ defmodule Acceptances.BulkTest do
 
     Tirexs.Manage.refresh("bear_test", settings)
     {_, _, body} = Tirexs.ElasticSearch.get("bear_test/_count", settings)
-    assert body["count"] == 2
+    assert body[:count] == 2
 
     Tirexs.Bulk.store [index: "bear_test", type: "document", id: 1, retry_on_conflict: 3], settings do
       update doc: [title: "updated_title"]
diff --git a/test/acceptances/elastic_search_test.exs b/test/acceptances/elastic_search_test.exs
index 856d238..4d81fb5 100644
--- a/test/acceptances/elastic_search_test.exs
+++ b/test/acceptances/elastic_search_test.exs
@@ -14,7 +14,7 @@ defmodule Acceptances.ElasticSearchTest do
     {:error, _, _}  = get("missing_index", settings)
     {:ok, _, body}    = get("", settings)
 
-    assert body["tagline"] == "You Know, for Search"
+    assert body[:tagline] == "You Know, for Search"
 
   end
 
@@ -22,7 +22,7 @@ defmodule Acceptances.ElasticSearchTest do
     settings = Tirexs.ElasticSearch.Config.new()
     delete("bear_test", settings)
     {:ok, _, body} = put("bear_test", settings)
-    assert body["acknowledged"] == true
+    assert body[:acknowledged] == true
     delete("bear_test", settings)
   end
 
@@ -30,7 +30,7 @@ defmodule Acceptances.ElasticSearchTest do
     settings = Tirexs.ElasticSearch.Config.new()
     put("bear_test", settings)
     {:ok, _, body} = delete("bear_test", settings)
-    assert body["acknowledged"] == true
+    assert body[:acknowledged] == true
   end
 
 
@@ -69,7 +69,7 @@ defmodule Acceptances.ElasticSearchTest do
 
     {:ok, _, body} = Tirexs.Mapping.create_resource(index, settings)
 
-    assert body["acknowledged"] == true
+    assert body[:acknowledged] == true
 
     delete("bear_test", settings)
   end
@@ -131,7 +131,7 @@ defmodule Acceptances.ElasticSearchTest do
     result = Tirexs.Query.create_resource(s, settings)
 
     assert result.count == 1
-    assert List.first(result.hits)["_source"]["id"] == 2
+    assert List.first(result.hits)[:_source][:id] == 2
 
   end
 end
diff --git a/test/acceptances/manage_test.exs b/test/acceptances/manage_test.exs
index 04e5b97..0683e37 100644
--- a/test/acceptances/manage_test.exs
+++ b/test/acceptances/manage_test.exs
@@ -2,8 +2,7 @@ Code.require_file "../../test_helper.exs", __ENV__.file
 
 defmodule Acceptances.ManageTest do
   use ExUnit.Case
-
-  import Tirexs.ElasticSearch
+  import TestHelpers
 
   import Tirexs.Bulk
 
@@ -12,11 +11,19 @@ defmodule Acceptances.ManageTest do
 
   @settings Tirexs.ElasticSearch.Config.new()
 
+  setup do
+    create_index("bear_test", @settings)
+    :ok
+  end
+
+  teardown do
+    remove_index("bear_test", @settings)
+    :ok
+  end
+
   test :count do
-    put("bear_test", @settings)
-    {_, _, body} = Tirexs.Manage.count([index: "bear_test"], @settings)
-    assert body["count"] == 0
-    delete("bear_test", @settings)
+    {:ok, 200, body} = repeat fn -> Tirexs.Manage.count([index: "bear_test"], @settings) end
+    assert Dict.get(body, :count) == 0
   end
 
   test :count_with_query do
@@ -24,14 +31,11 @@ defmodule Acceptances.ManageTest do
       term "user", "kim"
     end
 
-    put("bear_test", @settings)
-    {_, _, body} = Tirexs.Manage.count([index: "bear_test"] ++ query, @settings)
-    assert body["count"] == 0
-    delete("bear_test", @settings)
+    {:ok, 200, body} = repeat fn -> Tirexs.Manage.count([index: "bear_test"] ++ query, @settings) end
+    assert Dict.get(body, :count) == 0
   end
 
   test :delete_by_query do
-    delete("bear_test", @settings)
     index = [index: "bear_test"]
     mappings do
       index "id", type: "integer"
@@ -47,7 +51,7 @@ defmodule Acceptances.ManageTest do
 
     {_, _, body} = Tirexs.ElasticSearch.get("bear_test/_count", @settings)
 
-    assert body["count"] == 2
+    assert Dict.get(body, :count) == 2
 
     query = query do
       term "id", 1
@@ -55,13 +59,10 @@ defmodule Acceptances.ManageTest do
 
     Tirexs.Manage.delete_by_query([index: "bear_test", q: "id:1"] ++ query, @settings)
     {_, _, body} = Tirexs.ElasticSearch.get("bear_test/_count", @settings)
-    assert body["count"] == 1
-
-    delete("bear_test", @settings)
+    assert Dict.get(body, :count) == 1
   end
 
   test :more_like_this do
-    delete("bear_test", @settings)
     Tirexs.Bulk.store [index: "bear_test", refresh: false], @settings do
       create id: 1, name: "bar1", description: "foo bar test", type: "my_type"
       create id: 2, name: "bar2", description: "foo bar test", type: "my_type"
@@ -70,14 +71,12 @@ defmodule Acceptances.ManageTest do
     Tirexs.Manage.refresh(["bear_test"], @settings)
 
     {_, _, body} = Tirexs.Manage.more_like_this([id: 1, type: "my_type", index: "bear_test", mlt_fields: "name,description", min_term_freq: 1], @settings)
-    assert body["hits"]["hits"] == []
+    assert Dict.get(body, :hits) |> Dict.get(:hits) == []
   end
 
   test :validate_and_explain do
-    delete("bear_test", @settings)
-    put("bear_test/my_type", @settings)
     doc = [user: "kimchy", post_date: "2009-11-15T14:12:12", message: "trying out Elastic Search"]
-    put("bear_test/my_type/1", JSEX.encode!(doc), @settings)
+    Tirexs.ElasticSearch.put("bear_test/my_type/1", JSEX.encode!(doc), @settings)
 
     query = query do
       filtered do
@@ -91,39 +90,34 @@ defmodule Acceptances.ManageTest do
     end
 
     {_, _, body} = Tirexs.Manage.validate([index: "bear_test"] ++ query, @settings)
-
-    assert body["valid"] == true
+    assert Dict.get(body, :valid) == true
 
     {_, _, body} = Tirexs.Manage.validate([index: "bear_test", q: "user:foo"], @settings)
 
-    assert body["valid"] == true
+    assert Dict.get(body, :valid) == true
 
     {_, _, body} = Tirexs.Manage.explain([index: "bear_test", type: "my_type", id: 1, q: "message:search"], @settings)
-    body = JSEX.decode!(to_string(body))
-    assert body["matched"] == false
-
-    delete("bear_test", @settings)
+    body = JSEX.decode!(to_string(body), [{:labels, :atom}])
+    assert Dict.get(body, :matched) == false
   end
 
   test :update do
-    delete("bear_test", @settings)
-    put("bear_test/my_type", @settings)
+    Tirexs.ElasticSearch.put("bear_test/my_type", @settings)
     doc = [user: "kimchy", counter: 1, post_date: "2009-11-15T14:12:12", message: "trying out Elastic Search", id: 1]
-    put("bear_test/my_type/1", JSEX.encode!(doc), @settings)
+    Tirexs.ElasticSearch.put("bear_test/my_type/1", JSEX.encode!(doc), @settings)
 
-    {_, _, body} = get("bear_test/my_type/1", @settings)
+    {_, _, body} = Tirexs.ElasticSearch.get("bear_test/my_type/1", @settings)
 
-    assert body["_source"]["counter"] == 1
+    assert body[:_source][:counter] == 1
     update = [script: "ctx._source.counter += count", params: [count: 1]]
     Tirexs.Manage.update([index: "bear_test", type: "my_type", id: "1"], update, @settings)
 
-    {_, _, body} = get("bear_test/my_type/1", @settings)
-    assert body["_source"]["counter"] == 2
+    {_, _, body} = Tirexs.ElasticSearch.get("bear_test/my_type/1", @settings)
+    assert body[:_source][:counter] == 2
 
     update_doc = [doc: [name: "new_name"]]
     Tirexs.Manage.update([index: "bear_test", type: "my_type", id: "1"], update_doc, @settings)
-    {_, _, body} = get("bear_test/my_type/1", @settings)
-    assert body["_source"]["name"] == "new_name"
+    {_, _, body} = Tirexs.ElasticSearch.get("bear_test/my_type/1", @settings)
+    assert body[:_source][:name] == "new_name"
   end
-
 end
diff --git a/test/acceptances/percolator_test.exs b/test/acceptances/percolator_test.exs
index e33d204..cbeab4d 100644
--- a/test/acceptances/percolator_test.exs
+++ b/test/acceptances/percolator_test.exs
@@ -15,6 +15,6 @@ defmodule Tirexs.PerlocatorTest do
 
     {_, _, body} = Tirexs.Percolator.create_resource(percolator, settings)
 
-    assert body["_id"] == "kuku"
+    assert body[:_id] == "kuku"
   end
 end
diff --git a/test/acceptances/warmer_test.exs b/test/acceptances/warmer_test.exs
index 3af66c0..5602421 100644
--- a/test/acceptances/warmer_test.exs
+++ b/test/acceptances/warmer_test.exs
@@ -1,11 +1,19 @@
 Code.require_file "../../test_helper.exs", __ENV__.file
 defmodule Acceptances.WarmerTest do
   use ExUnit.Case
+  import TestHelpers
+
   import Tirexs.Search.Warmer
 
+  @settings Tirexs.ElasticSearch.Config.new()
+
+  teardown do
+    remove_index("bear_test", @settings)
+    :ok
+  end
+
   test :create_warmer do
-    settings = Tirexs.ElasticSearch.Config.new()
-    Tirexs.ElasticSearch.delete("bear_test", settings)
+    Tirexs.ElasticSearch.delete("bear_test", @settings)
 
     warmers = warmers do
       warmer_1 [types: []] do
@@ -22,10 +30,8 @@ defmodule Acceptances.WarmerTest do
       end
     end
 
-    Tirexs.ElasticSearch.put("bear_test", JSEX.encode!(warmers), settings)
-    {_, _, body} = Tirexs.ElasticSearch.get("bear_test/my_type/_warmer/warmer_1", settings)
-
-    assert body["bear_test"]["warmers"] == [{"warmer_1",[{"types",[]},{"source",[{"query",[{"match_all",[]}]},{"facets",[{"facet_1",[{"terms",[{"field","field"}]}]}]}]}]}]
-    Tirexs.ElasticSearch.delete("bear_test", settings)
+    Tirexs.ElasticSearch.put("bear_test", JSEX.encode!(warmers), @settings)
+    {:ok, 200, body} = Tirexs.ElasticSearch.get("bear_test/_warmer/warmer_1", @settings)
+    assert Dict.get(body, :bear_test) |> Dict.get(:warmers) == [warmer_1: [types: [], source: [query: [match_all: []], facets: [facet_1: [terms: [field: "field"]]]]]]
   end
 end
diff --git a/test/test_helper.exs b/test/test_helper.exs
index 2df156f..4d5a754 100644
--- a/test/test_helper.exs
+++ b/test/test_helper.exs
@@ -1,2 +1,27 @@
 ExUnit.start
 
+defmodule TestHelpers do
+  import :timer, only: [ sleep: 1 ]
+
+  def create_index(name, settings), do: Tirexs.ElasticSearch.put(name, settings)
+  def remove_index(name, settings), do: Tirexs.ElasticSearch.delete(name, settings)
+
+  def repeat(func) do
+    repeat_receiving_until(503, 200, 10, func)
+  end
+
+  defp repeat_receiving_until(_status, _result_status, 1, func)  do
+    func.()
+  end
+
+  defp repeat_receiving_until(status, result_status, retries, func)  do
+    case func.() do
+      {str_res, ^result_status, body} -> {str_res, result_status, body}
+      {_, ^status, _} ->
+        sleep 100
+        repeat_receiving_until(status, result_status, retries - 1, func)
+      result -> result
+    end
+  end
+
+end
diff --git a/test/tirexs/bulk_test.exs b/test/tirexs/bulk_test.exs
index bd6adf1..5d0b8ff 100644
--- a/test/tirexs/bulk_test.exs
+++ b/test/tirexs/bulk_test.exs
@@ -10,13 +10,13 @@ defmodule Tirexs.BulkTest do
     document = [id: "id", title: "Hello"]
     assert get_id_from_document(document) == "id"
 
-    document = [{"id", "id"}, {"title", "Hello"}]
+    document = [{:id, "id"}, {:title, "Hello"}]
     assert get_id_from_document(document) == "id"
 
     document = [_id: "_id", title: "Hello"]
     assert get_id_from_document(document) == "_id"
 
-    document = [{"_id", "_id"}, {"title", "Hello"}]
+    document = [{:_id, "_id"}, {:title, "Hello"}]
     assert get_id_from_document(document) == "_id"
   end