diff --git a/Gemfile b/Gemfile
index e77754b..0963f18 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,3 +8,4 @@ gemspec
 gem "rake", "~> 13.0"
 
 gem "rspec", "~> 3.0"
+gem "standard", "~> 1.27.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index aeff3a2..62943d4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -7,6 +7,7 @@ PATH
 GEM
   remote: https://rubygems.org/
   specs:
+    ast (2.4.2)
     byebug (11.1.3)
     coderay (1.1.3)
     diff-lcs (1.5.0)
@@ -14,14 +15,22 @@ GEM
       faraday-net_http (>= 2.0, < 3.1)
       ruby2_keywords (>= 0.0.4)
     faraday-net_http (3.0.2)
+    json (2.6.3)
+    language_server-protocol (3.17.0.3)
     method_source (1.0.0)
+    parallel (1.23.0)
+    parser (3.2.2.0)
+      ast (~> 2.4.1)
     pry (0.14.2)
       coderay (~> 1.1)
       method_source (~> 1.0)
     pry-byebug (3.10.1)
       byebug (~> 11.0)
       pry (>= 0.13, < 0.15)
+    rainbow (3.1.1)
     rake (13.0.6)
+    regexp_parser (2.8.0)
+    rexml (3.2.5)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -35,17 +44,40 @@ GEM
       diff-lcs (>= 1.2.0, < 2.0)
       rspec-support (~> 3.12.0)
     rspec-support (3.12.0)
+    rubocop (1.50.2)
+      json (~> 2.3)
+      parallel (~> 1.10)
+      parser (>= 3.2.0.0)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.28.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.28.0)
+      parser (>= 3.2.1.0)
+    rubocop-performance (1.16.0)
+      rubocop (>= 1.7.0, < 2.0)
+      rubocop-ast (>= 0.4.0)
+    ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
+    standard (1.27.0)
+      language_server-protocol (~> 3.17.0.2)
+      rubocop (~> 1.50.2)
+      rubocop-performance (~> 1.16.0)
+    unicode-display_width (2.4.2)
 
 PLATFORMS
   x86_64-darwin-19
   x86_64-darwin-22
+  x86_64-linux
 
 DEPENDENCIES
   milvus!
   pry-byebug (~> 3.10.0)
   rake (~> 13.0)
   rspec (~> 3.0)
+  standard (~> 1.27.0)
 
 BUNDLED WITH
    2.4.0
diff --git a/README.md b/README.md
index 2bdfbce..2e3674e 100644
--- a/README.md
+++ b/README.md
@@ -125,7 +125,8 @@ client.entities.compact!(
   collection_id: "book"
 )
 # => {"status"=>{}, "compactionID"=>440928616022809499}
-
+```
+```ruby
 # Check compaction status
 client.entities.compact_status(
   compaction_id: 440928616022809499
diff --git a/lib/milvus/client.rb b/lib/milvus/client.rb
index 0d02d88..9230f30 100644
--- a/lib/milvus/client.rb
+++ b/lib/milvus/client.rb
@@ -6,7 +6,7 @@ module Milvus
   class Client
     attr_reader :url, :api_key
 
-    API_VERSION = "api/v1".freeze
+    API_VERSION = "api/v1"
 
     def initialize(
       url:,
diff --git a/lib/milvus/collections.rb b/lib/milvus/collections.rb
index e107612..3b87560 100644
--- a/lib/milvus/collections.rb
+++ b/lib/milvus/collections.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Collections < Base
-    PATH = "collection".freeze
+    PATH = "collection"
 
     # Create a Collection
     def create(
diff --git a/lib/milvus/constants.rb b/lib/milvus/constants.rb
index bd6700f..674c4f1 100644
--- a/lib/milvus/constants.rb
+++ b/lib/milvus/constants.rb
@@ -14,4 +14,4 @@ module Milvus
     "binary_vector" => 101,
     "float_vector" => 102
   }.freeze
-end
\ No newline at end of file
+end
diff --git a/lib/milvus/entities.rb b/lib/milvus/entities.rb
index e462c12..0b02910 100644
--- a/lib/milvus/entities.rb
+++ b/lib/milvus/entities.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Entities < Base
-    PATH = "entities".freeze
+    PATH = "entities"
 
     # Insert the data to the collection.
     def insert(
@@ -18,7 +18,7 @@ def insert(
           num_rows: num_rows
         }.to_json
 
-        req.body['partition_name'] = partition_name if partition_name
+        req.body["partition_name"] = partition_name if partition_name
       end
       response.body.empty? ? true : response.body
     end
diff --git a/lib/milvus/health.rb b/lib/milvus/health.rb
index 9258cb5..44f4d9d 100644
--- a/lib/milvus/health.rb
+++ b/lib/milvus/health.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Health < Base
-    PATH = "health".freeze
+    PATH = "health"
 
     def get
       response = client.connection.get(PATH.to_s)
diff --git a/lib/milvus/indices.rb b/lib/milvus/indices.rb
index 069c283..bea99dd 100644
--- a/lib/milvus/indices.rb
+++ b/lib/milvus/indices.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Indices < Base
-    PATH = "index".freeze
+    PATH = "index"
 
     def create(
       collection_name:,
diff --git a/lib/milvus/partitions.rb b/lib/milvus/partitions.rb
index 4919fa4..c0f91fa 100644
--- a/lib/milvus/partitions.rb
+++ b/lib/milvus/partitions.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Partitions < Base
-    PATH = "partition".freeze
+    PATH = "partition"
 
     # Create a partition
     def create(collection_name:, partition_name:)
diff --git a/lib/milvus/query.rb b/lib/milvus/query.rb
index d1def85..b53041c 100644
--- a/lib/milvus/query.rb
+++ b/lib/milvus/query.rb
@@ -2,7 +2,7 @@
 
 module Milvus
   class Query < Base
-    PATH = "query".freeze
+    PATH = "query"
 
     def post(
       collection_name:,
diff --git a/lib/milvus/search.rb b/lib/milvus/search.rb
index b1d054e..f57bc39 100644
--- a/lib/milvus/search.rb
+++ b/lib/milvus/search.rb
@@ -2,34 +2,28 @@
 
 module Milvus
   class Search < Base
-    PATH = "search".freeze
+    PATH = "search"
 
     def post(
       collection_name:,
-      output_fields: nil,
-      anns_field:,
-      top_k:,
-      params:,
-      metric_type:,
-      round_decimal: nil,
-      vectors:,
-      dsl_type:
+      anns_field:, top_k:, params:, metric_type:, vectors:, dsl_type:, output_fields: nil,
+      round_decimal: nil
     )
       response = client.connection.post(PATH) do |req|
         req.body = {
           collection_name: collection_name,
           search_params: [
-            { key: "anns_field", value: anns_field },
-            { key: "topk", value: top_k },
-            { key: "params", value: params },
-            { key: "metric_type", value: metric_type },
+            {key: "anns_field", value: anns_field},
+            {key: "topk", value: top_k},
+            {key: "params", value: params},
+            {key: "metric_type", value: metric_type}
           ],
           dsl_type: dsl_type,
           vectors: vectors
         }
         if round_decimal
           req.body[:search_params].push(
-            { key: "round_decimal", value: round_decimal }
+            {key: "round_decimal", value: round_decimal}
           )
         end
         if output_fields
diff --git a/lib/milvus/version.rb b/lib/milvus/version.rb
index e769b6c..13059d8 100644
--- a/lib/milvus/version.rb
+++ b/lib/milvus/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Milvus
-  VERSION = "0.9.0".freeze
+  VERSION = "0.9.0"
 end
diff --git a/spec/milvus/collections_spec.rb b/spec/milvus/collections_spec.rb
index fb3f69a..68e7727 100644
--- a/spec/milvus/collections_spec.rb
+++ b/spec/milvus/collections_spec.rb
@@ -28,27 +28,27 @@
         auto_id: false,
         fields: [
           {
-            "name": "book_id",
-            "description": "book id",
-            "is_primary_key": true,
-            "autoID": false,
-            "data_type": Milvus::DATA_TYPES["int64"]
+            name: "book_id",
+            description: "book id",
+            is_primary_key: true,
+            autoID: false,
+            data_type: Milvus::DATA_TYPES["int64"]
           },
           {
-            "name": "word_count",
-            "description": "count of words",
-            "is_primary_key": false,
-            "data_type": Milvus::DATA_TYPES["int64"]
+            name: "word_count",
+            description: "count of words",
+            is_primary_key: false,
+            data_type: Milvus::DATA_TYPES["int64"]
           },
           {
-            "name": "book_intro",
-            "description": "embedded vector of book introduction",
-            "data_type": Milvus::DATA_TYPES["binary_vector"],
-            "is_primary_key": false,
-            "type_params": [
+            name: "book_intro",
+            description: "embedded vector of book introduction",
+            data_type: Milvus::DATA_TYPES["binary_vector"],
+            is_primary_key: false,
+            type_params: [
               {
-                "key": "dim",
-                "value": "2"
+                key: "dim",
+                value: "2"
               }
             ]
           }
diff --git a/spec/milvus/entities_spec.rb b/spec/milvus/entities_spec.rb
index 55ba692..e1e4314 100644
--- a/spec/milvus/entities_spec.rb
+++ b/spec/milvus/entities_spec.rb
@@ -30,21 +30,21 @@
         num_rows: 5,
         fields_data: [
           {
-            "field_name": "book_id",
-            "type": Milvus::DATA_TYPES["int64"],
-            "field": [1,2,3,4,5]
+            field_name: "book_id",
+            type: Milvus::DATA_TYPES["int64"],
+            field: [1, 2, 3, 4, 5]
           },
           {
-            "field_name": "word_count",
-            "type": Milvus::DATA_TYPES["int64"],
-            "field": [1000,2000,3000,4000,5000]
+            field_name: "word_count",
+            type: Milvus::DATA_TYPES["int64"],
+            field: [1000, 2000, 3000, 4000, 5000]
           },
           {
-            "field_name": "book_intro",
-            "type": 101,
-            "field": [ [1,1],[2,1],[3,1],[4,1],[5,1] ]
+            field_name: "book_intro",
+            type: 101,
+            field: [[1, 1], [2, 1], [3, 1], [4, 1], [5, 1]]
           }
-        ]  
+        ]
       )
       expect(response).to eq(entities_created_fixture)
     end
diff --git a/spec/milvus/indices_spec.rb b/spec/milvus/indices_spec.rb
index 3670ee1..66139e7 100644
--- a/spec/milvus/indices_spec.rb
+++ b/spec/milvus/indices_spec.rb
@@ -26,9 +26,9 @@
         collection_name: "book",
         field_name: "book_intro",
         extra_params: [
-          { key: "metric_type", "value": "L2" },
-          { key: "index_type", "value": "IVF_FLAT" },
-          { key: "params", "value": "{\"nlist\":1024}" }
+          {key: "metric_type", value: "L2"},
+          {key: "index_type", value: "IVF_FLAT"},
+          {key: "params", value: "{\"nlist\":1024}"}
         ]
       )
       expect(response).to eq(true)
@@ -52,4 +52,4 @@
       expect(response).to eq(true)
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/milvus/query_spec.rb b/spec/milvus/query_spec.rb
index af1e849..616c559 100644
--- a/spec/milvus/query_spec.rb
+++ b/spec/milvus/query_spec.rb
@@ -29,4 +29,4 @@
       expect(response).to eq(true)
     end
   end
-end
\ No newline at end of file
+end
diff --git a/spec/milvus/search_spec.rb b/spec/milvus/search_spec.rb
index 7b7a073..5e59ca6 100644
--- a/spec/milvus/search_spec.rb
+++ b/spec/milvus/search_spec.rb
@@ -29,7 +29,7 @@
         params: "{\"nprobe\": 10}",
         metric_type: "L2",
         round_decimal: "-1",
-        vectors: [ [0.1,0.2] ],
+        vectors: [[0.1, 0.2]],
         dsl_type: 1
       )
       expect(response).to eq(search_result)