diff --git a/.code-samples.meilisearch.yaml b/.code-samples.meilisearch.yaml
index 25add8e0..5aa5fa19 100644
--- a/.code-samples.meilisearch.yaml
+++ b/.code-samples.meilisearch.yaml
@@ -69,10 +69,6 @@ update_faceting_settings_1: |-
   index('books').update_faceting({ max_values_per_facet: 2 })
 reset_faceting_settings_1: |-
   index('books').reset_faceting
-settings_guide_faceting_1: |-
-  index('books').update_faceting({ max_values_per_facet: 5 })
-settings_guide_pagination_1: |-
-  index('books').update_pagination({ max_total_hits: 50 })
 get_one_index_1: |-
   client.fetch_index('movies')
 list_all_indexes_1: |-
@@ -281,6 +277,10 @@ filtering_guide_3: |-
   client.index('movies').search('Planet of the Apes', {
     filter: 'rating >= 3 AND (NOT director = "Tim Burton")'
   })
+filtering_guide_nested_1: |-
+  client.index('movies_ratings').search('thriller', {
+    filter: 'rating.users >= 90'
+  })
 search_parameter_guide_query_1: |-
   client.index('movies').search('shifu')
 search_parameter_guide_offset_1: |-
@@ -327,60 +327,6 @@ search_parameter_guide_matching_strategy_2: |-
   client.index('movies').search('big fat liar', {
     matching_strategy: 'all'
   })
-settings_guide_synonyms_1: |-
-  client.index('tops').update_settings({
-    synonyms: {
-      sweater: ['jumper'],
-      jumper: ['sweater']
-    }
-  })
-settings_guide_stop_words_1: |-
-  client.index('movies').update_settings({
-    stop_words: [
-      'the',
-      'a',
-      'an'
-    ]
-  })
-settings_guide_ranking_rules_1: |-
-  client.index('movies').update_settings({
-    ranking_rules: [
-      'words',
-      'typo',
-      'proximity',
-      'attribute',
-      'sort',
-      'exactness',
-      'release_date:asc',
-      'rank:desc'
-    ]
-  })
-settings_guide_distinct_1: |-
-  client.index('jackets').update_distinct_attribute('product_id')
-settings_guide_searchable_1: |-
-  client.index('movies').update_settings({
-    searchable_attributes: [
-      'title',
-      'overview',
-      'genres'
-    ]
-  })
-settings_guide_displayed_1: |-
-  client.index('movies').update_settings({
-    displayed_attributes: [
-      'title',
-      'overview',
-      'genres',
-      'release_date'
-    ]
-  })
-settings_guide_sortable_1: |-
-  client.index('books').update_settings({
-    sortable_attributes: [
-      'price',
-      'author'
-    ]
-  })
 add_movies_json_1: |-
   require 'json'
 
@@ -389,8 +335,8 @@ add_movies_json_1: |-
   client.index('movies').add_documents(movies)
 documents_guide_add_movie_1: |-
   client.index('movies').add_documents([{
-    "movie_id": "123sq178",
-    "title": "Amelie Poulain"
+    movie_id: '123sq178',
+    title: 'Amelie Poulain'
   }])
 getting_started_add_documents_md: |-
   ```bash
@@ -416,11 +362,33 @@ getting_started_search_md: |-
   ```
 
   [About this SDK](https://www.github.com/meilisearch/meilisearch-ruby)
-faceted_search_update_settings_1: |-
+filtering_update_settings_1: |-
   client.index('movies').update_filterable_attributes([
     'director',
     'genres'
   ])
+faceted_search_1: |-
+  client.index('books').search('classic', {
+    facets: ['genres', 'rating', 'language']
+  })
+faceted_search_2: |-
+  client.multi_search([
+    {
+      indexUid: 'books',
+      facets: ['language', 'genres', 'author', 'format'],
+      filter: [['language = English', 'language = French'], ['genres = Fiction']]
+    },
+    {
+      indexUid: 'books',
+      facets: ['language'],
+      filter: [['genres = Fiction']]
+    },
+    {
+      indexUid: 'books',
+      facets: ['genres'],
+      filter: [['language = English', 'language = French']]
+    }
+  ])
 faceted_search_filter_1: |-
   client.index('movies').search('thriller', {
     filter: [['genres = Horror', 'genres = Mystery'], 'director = "Jordan Peele"']
@@ -431,6 +399,8 @@ faceted_search_walkthrough_filter_1: |-
   client.index('movies').search('thriller', {
     filter: [['genres = Horror', 'genres = Mystery'], 'director = "Jordan Peele"']
   })
+faceted_search_update_settings_1: |-
+  client.index('books').update_filterable_attributes(['genres', 'rating', 'language'])
 post_dump_1: |-
   client.create_dump
 phrase_search_1: |-
@@ -457,6 +427,8 @@ update_sortable_attributes_1: |-
     'price',
     'author'
   ])
+sorting_guide_sort_nested_1: |-
+  client.index('books').search('science fiction', { sort: ['rating.users:asc'] })
 reset_sortable_attributes_1: |-
   client.index('books').reset_sortable_attributes
 search_parameter_guide_sort_1: |-
@@ -467,6 +439,8 @@ geosearch_guide_filter_usage_1: |-
   client.index('restaurants').search('', { filter: '_geoRadius(45.472735, 9.184019, 2000)' })
 geosearch_guide_filter_usage_2: |-
   client.index('restaurants').search('', { filter: '_geoRadius(45.472735, 9.184019, 2000) AND type = pizza' })
+geosearch_guide_filter_usage_3: |-
+  client.index('restaurants').search('', { filter: ['_geoBoundingBox([45.494181, 9.179175], [45.449484, 9.214024])'] })
 geosearch_guide_sort_settings_1: |-
   client.index('restaurants').update_sortable_attributes(['_geo'])
 geosearch_guide_sort_usage_1: |-
@@ -622,10 +596,10 @@ typo_tolerance_guide_4: |-
       two_typos: 10
     }
   })
-settings_guide_typo_tolerance_1: |-
-  index('books').update_typo_tolerance({
-    min_word_size_for_typos: {
-      two_typos: 12
-    },
-    disable_on_attributes: ['title']
-  })
+multi_search_1: |-
+  client.multi_search([
+    { index_uid: 'books', q: 'prince' },
+    { index_uid: 'movies', q: 'pooh', limit: 5 }
+    { index_uid: 'movies', q: 'nemo', limit: 5 }
+    { index_uid: 'movie_ratings', q: 'us' }
+  ])
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index c7748c6c..01a5cdf0 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,6 +1,6 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2022-07-27 15:08:15 UTC using RuboCop version 1.32.0.
+# on 2023-03-30 12:31:09 UTC using RuboCop version 1.48.1.
 # The point is for the user to remove these configuration records
 # one by one as the offenses are removed from the code base.
 # Note that changes in the inspected code, or installation of new
@@ -8,22 +8,22 @@
 
 # Offense count: 1
 # This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: Include.
+# Configuration parameters: Severity, Include.
 # Include: **/*.gemspec
 Gemspec/RequireMFA:
   Exclude:
     - 'meilisearch.gemspec'
 
-# Offense count: 46
-# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
-# IgnoredMethods: refine
+# Offense count: 45
+# Configuration parameters: CountComments, CountAsOne, AllowedMethods, AllowedPatterns.
+# AllowedMethods: refine
 Metrics/BlockLength:
-  Max: 626
+  Max: 624
 
 # Offense count: 2
 # Configuration parameters: CountComments, CountAsOne.
 Metrics/ClassLength:
-  Max: 317
+  Max: 318
 
 # Offense count: 1
 # Configuration parameters: Max, CountKeywordArgs.
diff --git a/lib/meilisearch.rb b/lib/meilisearch.rb
index b75baff4..2ba15581 100644
--- a/lib/meilisearch.rb
+++ b/lib/meilisearch.rb
@@ -3,6 +3,7 @@
 require 'meilisearch/version'
 require 'meilisearch/utils'
 require 'meilisearch/http_request'
+require 'meilisearch/multi_search'
 require 'meilisearch/tenant_token'
 require 'meilisearch/task'
 require 'meilisearch/client'
diff --git a/lib/meilisearch/client.rb b/lib/meilisearch/client.rb
index 951d13f2..c2d3ffa8 100644
--- a/lib/meilisearch/client.rb
+++ b/lib/meilisearch/client.rb
@@ -3,6 +3,7 @@
 module MeiliSearch
   class Client < HTTPRequest
     include MeiliSearch::TenantToken
+    include MeiliSearch::MultiSearch
 
     ### INDEXES
 
diff --git a/lib/meilisearch/index.rb b/lib/meilisearch/index.rb
index 45f1364e..3d462267 100644
--- a/lib/meilisearch/index.rb
+++ b/lib/meilisearch/index.rb
@@ -96,9 +96,13 @@ def add_documents_ndjson(documents, primary_key = nil)
     alias replace_documents_ndjson add_documents_ndjson
     alias add_or_replace_documents_ndjson add_documents_ndjson
 
-    def add_documents_csv(documents, primary_key = nil)
+    def add_documents_csv(documents, primary_key = nil, delimiter = nil)
       options = { headers: { 'Content-Type' => 'text/csv' }, convert_body?: false }
-      http_post "/indexes/#{@uid}/documents", documents, { primaryKey: primary_key }.compact, options
+
+      http_post "/indexes/#{@uid}/documents", documents, {
+        primaryKey: primary_key,
+        csvDelimiter: delimiter
+      }.compact, options
     end
     alias replace_documents_csv add_documents_csv
     alias add_or_replace_documents_csv add_documents_csv
diff --git a/lib/meilisearch/multi_search.rb b/lib/meilisearch/multi_search.rb
new file mode 100644
index 00000000..2cb3cba1
--- /dev/null
+++ b/lib/meilisearch/multi_search.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+module MeiliSearch
+  module MultiSearch
+    def multi_search(data)
+      body = Utils.transform_attributes(data)
+
+      http_post '/multi-search', queries: body
+    end
+  end
+end
diff --git a/spec/meilisearch/client/multi_search_spec.rb b/spec/meilisearch/client/multi_search_spec.rb
new file mode 100644
index 00000000..e8d52a53
--- /dev/null
+++ b/spec/meilisearch/client/multi_search_spec.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+RSpec.describe 'MeiliSearch::Client - Multiple Index Search' do
+  before do
+    client.create_index('books')
+    task = client.create_index('movies')
+    client.wait_for_task(task['taskUid'])
+  end
+
+  it 'does a custom search with two different indexes' do
+    response = client.multi_search([
+                                     { index_uid: 'books', q: 'prince' },
+                                     { index_uid: 'movies', q: 'prince' }
+                                   ])
+
+    expect(response['results'].count).to eq(2)
+    expect(response['results'][0]['estimatedTotalHits']).to eq(0)
+    expect(response['results'][1]['estimatedTotalHits']).to eq(0)
+  end
+end
diff --git a/spec/meilisearch/index/documents_spec.rb b/spec/meilisearch/index/documents_spec.rb
index 9d629ed4..6dbe3d53 100644
--- a/spec/meilisearch/index/documents_spec.rb
+++ b/spec/meilisearch/index/documents_spec.rb
@@ -78,6 +78,23 @@
         expect(index.documents['results'].count).to eq(3)
       end
 
+      it 'adds CSV documents (as an array of documents with a different separator)' do
+        documents = <<~CSV
+          "objectRef:number"|"title:string"|"comment:string"
+          "1239"|"Pride and Prejudice"|"A great book"
+          "4569"|"Le Petit Prince"|"A french book"
+          "49"|"Harry Potter and the Half-Blood Prince"|"The best book"
+        CSV
+
+        response = index.add_documents_csv(documents, 'objectRef', '|')
+        index.wait_for_task(response['taskUid'])
+
+        expect(index.documents['results'].count).to eq(3)
+        expect(index.documents['results'][1]['objectRef']).to eq(4569)
+        expect(index.documents['results'][1]['title']).to eq('Le Petit Prince')
+        expect(index.documents['results'][1]['comment']).to eq('A french book')
+      end
+
       it 'adds documents in a batch (as a array of documents)' do
         task = index.add_documents_in_batches(documents, 5)
         expect(task).to be_a(Array)
diff --git a/spec/meilisearch/index/search/facets_distribution_spec.rb b/spec/meilisearch/index/search/facets_distribution_spec.rb
index d57263a6..dbe21fb8 100644
--- a/spec/meilisearch/index/search/facets_distribution_spec.rb
+++ b/spec/meilisearch/index/search/facets_distribution_spec.rb
@@ -12,7 +12,8 @@
     response = index.search('prinec', facets: ['genre', 'author'])
     expect(response.keys).to contain_exactly(
       *DEFAULT_SEARCH_RESPONSE_KEYS,
-      'facetDistribution'
+      'facetDistribution',
+      'facetStats'
     )
     expect(response['estimatedTotalHits']).to eq(2)
     expect(response['facetDistribution'].keys).to contain_exactly('genre', 'author')
@@ -27,7 +28,8 @@
     response = index.search('', facets: ['genre', 'author'])
     expect(response.keys).to contain_exactly(
       *DEFAULT_SEARCH_RESPONSE_KEYS,
-      'facetDistribution'
+      'facetDistribution',
+      'facetStats'
     )
     expect(response['estimatedTotalHits']).to eq(documents.count)
     expect(response['facetDistribution'].keys).to contain_exactly('genre', 'author')
@@ -42,7 +44,8 @@
     response = index.search('', facets: ['year'])
     expect(response.keys).to contain_exactly(
       *DEFAULT_SEARCH_RESPONSE_KEYS,
-      'facetDistribution'
+      'facetDistribution',
+      'facetStats'
     )
     expect(response['estimatedTotalHits']).to eq(documents.count)
     expect(response['facetDistribution'].keys).to contain_exactly('year')
diff --git a/spec/meilisearch/index/search/multi_params_spec.rb b/spec/meilisearch/index/search/multi_params_spec.rb
index ed252460..585d7062 100644
--- a/spec/meilisearch/index/search/multi_params_spec.rb
+++ b/spec/meilisearch/index/search/multi_params_spec.rb
@@ -66,9 +66,11 @@
     response = index.update_filterable_attributes(['genre'])
     index.wait_for_task(response['taskUid'])
     response = index.search('prinec', facets: ['genre'], limit: 1)
+
     expect(response.keys).to contain_exactly(
       *DEFAULT_SEARCH_RESPONSE_KEYS,
-      'facetDistribution'
+      'facetDistribution',
+      'facetStats'
     )
     expect(response['estimatedTotalHits']).to eq(2)
     expect(response['hits'].count).to eq(1)
diff --git a/spec/meilisearch/utils_spec.rb b/spec/meilisearch/utils_spec.rb
index 45fd9c39..81f55c17 100644
--- a/spec/meilisearch/utils_spec.rb
+++ b/spec/meilisearch/utils_spec.rb
@@ -20,4 +20,30 @@
       expect(data).to eq({ 'date' => '2012-12-21T19:05:00+00:00' })
     end
   end
+
+  describe '.transform_attributes' do
+    it 'transforms snake_case into camelCased keys' do
+      data = described_class.transform_attributes({
+                                                    index_name: 'books',
+                                                    my_UID: '123'
+                                                  })
+
+      expect(data).to eq({ 'indexName' => 'books', 'myUid' => '123' })
+    end
+
+    it 'transforms snake_case into camel cased keys from array' do
+      data = described_class
+             .transform_attributes([
+                                     { index_uid: 'books', q: 'prince' },
+                                     { index_uid: 'movies', q: 'prince' }
+                                   ])
+
+      expect(data).to eq(
+        [
+          { 'indexUid' => 'books', 'q' => 'prince' },
+          { 'indexUid' => 'movies', 'q' => 'prince' }
+        ]
+      )
+    end
+  end
 end