diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index d9e1a9a10..59af8fc54 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -1,18 +1,16 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2020-06-28 04:00:53 UTC using RuboCop version 0.86.0.
+# on 2020-09-12 21:24:48 +0530 using RuboCop version 0.75.1.
 # 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
 # versions of RuboCop, may require this file to be generated again.
 
 # Offense count: 4
-# Configuration parameters: IgnoredMethods.
 Metrics/AbcSize:
-  Max: 34
+  Max: 35
 
 # Offense count: 3
-# Configuration parameters: IgnoredMethods.
 Metrics/CyclomaticComplexity:
   Max: 13
 
@@ -32,9 +30,8 @@ Metrics/ParameterLists:
   Max: 6
 
 # Offense count: 1
-# Configuration parameters: IgnoredMethods.
 Metrics/PerceivedComplexity:
-  Max: 10
+  Max: 11
 
 # Offense count: 1
 # Cop supports --auto-correct.
diff --git a/lib/gitlab.rb b/lib/gitlab.rb
index 0a875bb0d..c4a0ead67 100644
--- a/lib/gitlab.rb
+++ b/lib/gitlab.rb
@@ -29,9 +29,11 @@ def self.method_missing(method, *args, &block)
   end
 
   # Delegate to Gitlab::Client
+  # rubocop:disable Style/OptionalBooleanParameter
   def self.respond_to_missing?(method_name, include_private = false)
     client.respond_to?(method_name) || super
   end
+  # rubocop:enable Style/OptionalBooleanParameter
 
   # Delegate to HTTParty.http_proxy
   def self.http_proxy(address = nil, port = nil, username = nil, password = nil)
diff --git a/lib/gitlab/api.rb b/lib/gitlab/api.rb
index cc8c2b7b6..509f1ddd3 100644
--- a/lib/gitlab/api.rb
+++ b/lib/gitlab/api.rb
@@ -10,6 +10,7 @@ class API < Request
 
     # Creates a new API.
     # @raise [Error:MissingCredentials]
+    # rubocop:disable Lint/MissingSuper
     def initialize(options = {})
       options = Gitlab.options.merge(options)
       (Configuration::VALID_OPTIONS_KEYS + [:auth_token]).each do |key|
@@ -18,5 +19,6 @@ def initialize(options = {})
       request_defaults(sudo)
       self.class.headers 'User-Agent' => user_agent
     end
+    # rubocop:enable Lint/MissingSuper
   end
 end
diff --git a/lib/gitlab/cli_helpers.rb b/lib/gitlab/cli_helpers.rb
index 97b072388..08a3b46d2 100644
--- a/lib/gitlab/cli_helpers.rb
+++ b/lib/gitlab/cli_helpers.rb
@@ -111,7 +111,7 @@ def output_json(cmd, args, data)
       else
         hash_result = case data
                       when Gitlab::ObjectifiedHash, Gitlab::FileResponse
-                        record_hash([data], cmd, args, true)
+                        record_hash([data], cmd, args, single_value: true)
                       when Gitlab::PaginatedResponse
                         record_hash(data, cmd, args)
                       else
@@ -162,7 +162,7 @@ def record_table(data, cmd, args)
     # @param  [Array]  args         Options passed to the API call
     # @param  [bool]   single_value If set to true, a single result should be returned
     # @return [Hash]   Result hash
-    def record_hash(data, cmd, args, single_value = false)
+    def record_hash(data, cmd, args, single_value: false)
       if data.empty?
         result = nil
       else
diff --git a/lib/gitlab/client/commits.rb b/lib/gitlab/client/commits.rb
index ca9792926..77a44dd28 100644
--- a/lib/gitlab/client/commits.rb
+++ b/lib/gitlab/client/commits.rb
@@ -166,7 +166,7 @@ def commit_status(project, sha, options = {})
     # @option options [String] :name Filter by status name, eg. jenkins
     # @option options [String] :target_url The target URL to associate with this status
     def update_commit_status(project, sha, state, options = {})
-      post("/projects/#{url_encode project}/statuses/#{sha}", query: options.merge(state: state))
+      post("/projects/#{url_encode project}/statuses/#{sha}", body: options.merge(state: state))
     end
     alias repo_update_commit_status update_commit_status
 
diff --git a/lib/gitlab/client/container_registry.rb b/lib/gitlab/client/container_registry.rb
index ff8caf733..dc9a5eaf6 100644
--- a/lib/gitlab/client/container_registry.rb
+++ b/lib/gitlab/client/container_registry.rb
@@ -79,7 +79,7 @@ def delete_registry_repository_tag(project, repository_id, tag_name)
     # @option options [String] :older_than(required) Tags to delete that are older than the given time, written in human readable form 1h, 1d, 1month.
     # @return [void] This API call returns an empty response body.
     def bulk_delete_registry_repository_tags(project, repository_id, options = {})
-      delete("/projects/#{url_encode project}/registry/repositories/#{repository_id}/tags", query: options)
+      delete("/projects/#{url_encode project}/registry/repositories/#{repository_id}/tags", body: options)
     end
   end
 end
diff --git a/lib/gitlab/client/group_labels.rb b/lib/gitlab/client/group_labels.rb
index 9cca4bbdc..eecd2a32c 100644
--- a/lib/gitlab/client/group_labels.rb
+++ b/lib/gitlab/client/group_labels.rb
@@ -58,7 +58,7 @@ def edit_group_label(group, name, options = {})
     # @param  [String] name The name of a label.
     # @return [Gitlab::ObjectifiedHash] Information about deleted label.
     def delete_group_label(group, name)
-      delete("/groups/#{url_encode group}/labels", body: { name: name })
+      delete("/groups/#{url_encode group}/labels/#{name}")
     end
 
     # Subscribes the user to a group label to receive notifications
diff --git a/lib/gitlab/client/labels.rb b/lib/gitlab/client/labels.rb
index 7373121d3..39dba8660 100644
--- a/lib/gitlab/client/labels.rb
+++ b/lib/gitlab/client/labels.rb
@@ -58,7 +58,7 @@ def edit_label(project, name, options = {})
     # @param  [String] name The name of a label.
     # @return [Gitlab::ObjectifiedHash] Information about deleted label.
     def delete_label(project, name)
-      delete("/projects/#{url_encode project}/labels", body: { name: name })
+      delete("/projects/#{url_encode project}/labels/#{name}")
     end
 
     # Subscribes the user to a label to receive notifications
diff --git a/lib/gitlab/client/pipeline_schedules.rb b/lib/gitlab/client/pipeline_schedules.rb
index 9e9fe1efd..2b6d2f658 100644
--- a/lib/gitlab/client/pipeline_schedules.rb
+++ b/lib/gitlab/client/pipeline_schedules.rb
@@ -44,7 +44,7 @@ def pipeline_schedule(project, id)
     # @option options [Boolean] :active The activation of pipeline schedule. If false is set, the pipeline schedule will deactivated initially (default: true).
     # @return [Array<Gitlab::ObjectifiedHash>]
     def create_pipeline_schedule(project, options = {})
-      post("/projects/#{url_encode project}/pipeline_schedules", query: options)
+      post("/projects/#{url_encode project}/pipeline_schedules", body: options)
     end
 
     # Updates the pipeline schedule of a project.
@@ -62,7 +62,7 @@ def create_pipeline_schedule(project, options = {})
     # @option options [Boolean] :active The activation of pipeline schedule. If false is set, the pipeline schedule will deactivated initially (default: true).
     # @return [Array<Gitlab::ObjectifiedHash>] The updated pipeline schedule.
     def edit_pipeline_schedule(project, pipeline_schedule_id, options = {})
-      put("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}", query: options)
+      put("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}", body: options)
     end
 
     # Take ownership of a pipeline schedule.
@@ -101,7 +101,7 @@ def delete_pipeline_schedule(project, pipeline_schedule_id)
     # @option options [String] :value The value of a variable
     # @return [Array<Gitlab::ObjectifiedHash>] The created pipeline schedule variable.
     def create_pipeline_schedule_variable(project, pipeline_schedule_id, options = {})
-      post("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}/variables", query: options)
+      post("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}/variables", body: options)
     end
 
     # Updates the variable of a pipeline schedule.
@@ -116,7 +116,7 @@ def create_pipeline_schedule_variable(project, pipeline_schedule_id, options = {
     # @option options [String] :value The value of a variable.
     # @return [Array<Gitlab::ObjectifiedHash>] The updated pipeline schedule variable.
     def edit_pipeline_schedule_variable(project, pipeline_schedule_id, key, options = {})
-      put("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}/variables/#{url_encode key}", query: options)
+      put("/projects/#{url_encode project}/pipeline_schedules/#{pipeline_schedule_id}/variables/#{url_encode key}", body: options)
     end
 
     # Delete the variable of a pipeline schedule
diff --git a/lib/gitlab/file_response.rb b/lib/gitlab/file_response.rb
index eecd3fef8..48a11deb1 100644
--- a/lib/gitlab/file_response.rb
+++ b/lib/gitlab/file_response.rb
@@ -35,9 +35,11 @@ def method_missing(name, *args, &block)
       end
     end
 
+    # rubocop:disable Style/OptionalBooleanParameter
     def respond_to_missing?(method_name, include_private = false)
       super || @file.respond_to?(method_name, include_private)
     end
+    # rubocop:enable Style/OptionalBooleanParameter
 
     # Parse filename from the 'Content Disposition' header.
     def parse_headers!(headers)
diff --git a/lib/gitlab/objectified_hash.rb b/lib/gitlab/objectified_hash.rb
index e2f12c514..56ad85f47 100644
--- a/lib/gitlab/objectified_hash.rb
+++ b/lib/gitlab/objectified_hash.rb
@@ -44,8 +44,10 @@ def method_missing(method_name, *args, &block)
       end
     end
 
+    # rubocop:disable Style/OptionalBooleanParameter
     def respond_to_missing?(method_name, include_private = false)
       hash.keys.map(&:to_sym).include?(method_name.to_sym) || super
     end
+    # rubocop:enable Style/OptionalBooleanParameter
   end
 end
diff --git a/lib/gitlab/paginated_response.rb b/lib/gitlab/paginated_response.rb
index 07b7e91f9..519a757fe 100644
--- a/lib/gitlab/paginated_response.rb
+++ b/lib/gitlab/paginated_response.rb
@@ -25,9 +25,11 @@ def method_missing(name, *args, &block)
       end
     end
 
+    # rubocop:disable Style/OptionalBooleanParameter
     def respond_to_missing?(method_name, include_private = false)
       super || @array.respond_to?(method_name, include_private)
     end
+    # rubocop:enable Style/OptionalBooleanParameter
 
     def parse_headers!(headers)
       @links = PageLinks.new headers
diff --git a/lib/gitlab/shell_history.rb b/lib/gitlab/shell_history.rb
index 55a404f1b..dc419809b 100644
--- a/lib/gitlab/shell_history.rb
+++ b/lib/gitlab/shell_history.rb
@@ -42,10 +42,10 @@ def history_file_path
       File.expand_path(@file_path)
     end
 
-    def read_from_file
+    def read_from_file(&block)
       path = history_file_path
 
-      File.foreach(path) { |line| yield(line) } if File.exist?(path)
+      File.foreach(path, &block) if File.exist?(path)
     rescue StandardError => e
       warn "History file not loaded: #{e.message}"
     end
diff --git a/spec/gitlab/client/commits_spec.rb b/spec/gitlab/client/commits_spec.rb
index d59b60540..f261c7478 100644
--- a/spec/gitlab/client/commits_spec.rb
+++ b/spec/gitlab/client/commits_spec.rb
@@ -224,13 +224,13 @@
   describe '.update_commit_status' do
     before do
       stub_post('/projects/6/statuses/7d938cb8ac15788d71f4b67c035515a160ea76d8', 'project_update_commit_status')
-        .with(query: { name: 'test', ref: 'decreased-spec', state: 'failed' })
+        .with(body: { name: 'test', ref: 'decreased-spec', state: 'failed' })
       @status = Gitlab.update_commit_status(6, '7d938cb8ac15788d71f4b67c035515a160ea76d8', 'failed', name: 'test', ref: 'decreased-spec')
     end
 
     it 'gets the correct resource' do
       expect(a_post('/projects/6/statuses/7d938cb8ac15788d71f4b67c035515a160ea76d8')
-        .with(query: { name: 'test', ref: 'decreased-spec', state: 'failed' }))
+        .with(body: { name: 'test', ref: 'decreased-spec', state: 'failed' }))
     end
 
     it 'returns information about the newly created status' do
diff --git a/spec/gitlab/client/container_registry_spec.rb b/spec/gitlab/client/container_registry_spec.rb
index 8ece648cf..eb728037d 100644
--- a/spec/gitlab/client/container_registry_spec.rb
+++ b/spec/gitlab/client/container_registry_spec.rb
@@ -73,25 +73,25 @@
   describe '.bulk_delete_registry_repository_tags' do
     context 'when just name_regex provided for deletion' do
       before do
-        stub_delete('/projects/3/registry/repositories/1/tags', 'empty').with(query: { name_regex: '.*' })
+        stub_delete('/projects/3/registry/repositories/1/tags', 'empty').with(body: { name_regex: '.*' })
         Gitlab.bulk_delete_registry_repository_tags(3, 1, name_regex: '.*')
       end
 
       it 'gets the correct resource' do
         expect(a_delete('/projects/3/registry/repositories/1/tags')
-          .with(query: { name_regex: '.*' })).to have_been_made
+          .with(body: { name_regex: '.*' })).to have_been_made
       end
     end
 
     context 'when all options provided for deletion' do
       before do
-        stub_delete('/projects/3/registry/repositories/1/tags', 'empty').with(query: { name_regex: '[0-9a-z]{40}', keep_n: 5, older_than: '1d' })
+        stub_delete('/projects/3/registry/repositories/1/tags', 'empty').with(body: { name_regex: '[0-9a-z]{40}', keep_n: 5, older_than: '1d' })
         Gitlab.bulk_delete_registry_repository_tags(3, 1, name_regex: '[0-9a-z]{40}', keep_n: 5, older_than: '1d')
       end
 
       it 'gets the correct resource' do
         expect(a_delete('/projects/3/registry/repositories/1/tags')
-          .with(query: { name_regex: '[0-9a-z]{40}', keep_n: 5, older_than: '1d' })).to have_been_made
+          .with(body: { name_regex: '[0-9a-z]{40}', keep_n: 5, older_than: '1d' })).to have_been_made
       end
     end
   end
diff --git a/spec/gitlab/client/group_labels_spec.rb b/spec/gitlab/client/group_labels_spec.rb
index e8d443642..36350d6da 100644
--- a/spec/gitlab/client/group_labels_spec.rb
+++ b/spec/gitlab/client/group_labels_spec.rb
@@ -54,13 +54,12 @@
 
   describe '.delete_group_label' do
     before do
-      stub_delete('/groups/3/labels', 'label')
+      stub_delete('/groups/3/labels/Backlog', 'label')
       @label = Gitlab.delete_group_label(3, 'Backlog')
     end
 
     it 'gets the correct resource' do
-      expect(a_delete('/groups/3/labels')
-             .with(body: { name: 'Backlog' })).to have_been_made
+      expect(a_delete('/groups/3/labels/Backlog')).to have_been_made
     end
 
     it 'returns information about a deleted snippet' do
diff --git a/spec/gitlab/client/labels_spec.rb b/spec/gitlab/client/labels_spec.rb
index 52651a743..e093ee56f 100644
--- a/spec/gitlab/client/labels_spec.rb
+++ b/spec/gitlab/client/labels_spec.rb
@@ -21,13 +21,12 @@
 
   describe '.delete' do
     before do
-      stub_delete('/projects/3/labels', 'label')
+      stub_delete('/projects/3/labels/Backlog', 'label')
       @label = Gitlab.delete_label(3, 'Backlog')
     end
 
     it 'gets the correct resource' do
-      expect(a_delete('/projects/3/labels')
-             .with(body: { name: 'Backlog' })).to have_been_made
+      expect(a_delete('/projects/3/labels/Backlog')).to have_been_made
     end
 
     it 'returns information about a deleted snippet' do
diff --git a/spec/gitlab/client/pipeline_schedules_spec.rb b/spec/gitlab/client/pipeline_schedules_spec.rb
index 9117b3ddd..bb04f976f 100644
--- a/spec/gitlab/client/pipeline_schedules_spec.rb
+++ b/spec/gitlab/client/pipeline_schedules_spec.rb
@@ -108,14 +108,16 @@
 
   describe '.create_pipeline_schedule_variable' do
     before do
-      stub_post('/projects/3/pipeline_schedules/13/variables?key=NEW%20VARIABLE&value=new%20value', 'pipeline_schedule_variable')
+      stub_post('/projects/3/pipeline_schedules/13/variables', 'pipeline_schedule_variable')
+        .with(body: { key: 'NEW VARIABLE', value: 'new value' })
       @pipeline_schedule_variable = Gitlab.create_pipeline_schedule_variable(3, 13,
                                                                              key: 'NEW VARIABLE',
                                                                              value: 'new value')
     end
 
     it 'gets the correct resource' do
-      expect(a_post('/projects/3/pipeline_schedules/13/variables?key=NEW%20VARIABLE&value=new%20value')).to have_been_made
+      expect(a_post('/projects/3/pipeline_schedules/13/variables')
+        .with(body: { key: 'NEW VARIABLE', value: 'new value' })).to have_been_made
     end
 
     it 'returns a single variable' do
@@ -129,7 +131,8 @@
 
   describe '.edit_pipeline_schedule_variable' do
     before do
-      stub_put('/projects/3/pipeline_schedules/13/variables/NEW%20VARIABLE?value=update%20value', 'pipeline_schedule_variable_update')
+      stub_put('/projects/3/pipeline_schedules/13/variables/NEW%20VARIABLE', 'pipeline_schedule_variable_update')
+        .with(body: { value: 'update value' })
       @pipeline_schedule_variable = Gitlab.edit_pipeline_schedule_variable(3, 13, 'NEW VARIABLE', value: 'update value')
     end