diff --git a/.rubocop.yml b/.rubocop.yml
index 7520fda..7a4f0e1 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -6,10 +6,14 @@ AllCops:
   TargetRubyVersion: 2.5
   DisplayCopNames: true
   NewCops: enable # but feel free to disable them below
+  SuggestExtensions: false
   Exclude:
       - vendor/**/*
       - config.ru
 
+Gemspec/DevelopmentDependencies:
+  EnforcedStyle: gemspec
+
 Layout/EmptyLineBetweenDefs:
   AllowAdjacentOneLineDefs: true
 
@@ -27,12 +31,25 @@ Layout/LineLength:
 Metrics:
   Enabled: false
 
+RSpec/ClassCheck:
+  Enabled: false
+
 RSpec/ContextWording:
   Enabled: false
 
 RSpec/ExampleLength:
   Max: 25
 
+RSpec/FilePath:
+  Exclude:
+    - spec/chimera_http_client/server/*
+    - spec/chimera_http_client/stubbed/*
+
+RSpec/SpecFilePathFormat:
+  Exclude:
+    - spec/chimera_http_client/server/*
+    - spec/chimera_http_client/stubbed/*
+    -
 RSpec/MultipleExpectations:
   Enabled: false
 
@@ -42,6 +59,9 @@ RSpec/MultipleMemoizedHelpers:
 RSpec/NestedGroups:
   Max: 4
 
+RSpec/PendingWithoutReason:
+   Enabled: false
+
 Style/CaseLikeIf:
   Enabled: false
 
@@ -53,6 +73,7 @@ Style/Documentation:
 
 Style/DoubleNegation:
   Enabled: true
+
 Style/FrozenStringLiteralComment:
   Enabled: false
 
diff --git a/chimera_http_client.gemspec b/chimera_http_client.gemspec
index ebeb3dd..9e127fa 100644
--- a/chimera_http_client.gemspec
+++ b/chimera_http_client.gemspec
@@ -27,6 +27,8 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
+  spec.metadata["rubygems_mfa_required"] = "true"
+
   # the only sub-dependencies
   spec.add_runtime_dependency "typhoeus", "~> 1.1"
   spec.add_runtime_dependency "zeitwerk", ">= 2.0"
diff --git a/lib/chimera_http_client.rb b/lib/chimera_http_client.rb
index d1af6af..b73259f 100644
--- a/lib/chimera_http_client.rb
+++ b/lib/chimera_http_client.rb
@@ -7,5 +7,5 @@ module ChimeraHttpClient
   loader.setup
 
   # as Zeitwerk can't handle innner classes properly :-/
-  require_relative "./chimera_http_client/error"
+  require_relative "chimera_http_client/error"
 end
diff --git a/spec/chimera_http_client/server/connection_options_spec.rb b/spec/chimera_http_client/server/connection_options_spec.rb
index 6a1f4bc..8ea89af 100644
--- a/spec/chimera_http_client/server/connection_options_spec.rb
+++ b/spec/chimera_http_client/server/connection_options_spec.rb
@@ -1,6 +1,6 @@
 require "server_spec_helper"
 
-describe ChimeraHttpClient::Connection do # rubocop:disable RSpec/FilePath
+describe ChimeraHttpClient::Connection do
   let(:connection)    { described_class.new(base_url: base_url) }
   let(:base_url)      { "#{UsersServer.endpoint_url}/api/v1" }
   let(:endpoint)      { "users/22" }
@@ -46,11 +46,11 @@
 
       it "records request and custom context information" do
         expect { get }.to output(
-          "url: #{base_url}/users/22\n"\
-          "method: get\n"\
-          "status: 200\n"\
-          "runtime: 0.015\n"\
-          "completed_at: #{frozen_time}\n"\
+          "url: #{base_url}/users/22\n" \
+          "method: get\n" \
+          "status: 200\n" \
+          "runtime: 0.015\n" \
+          "completed_at: #{frozen_time}\n" \
           "context: {:user_id=>90210}\n"
         ).to_stdout
       end
diff --git a/spec/chimera_http_client/server/error_spec.rb b/spec/chimera_http_client/server/error_spec.rb
index 4ecec4a..614dd42 100644
--- a/spec/chimera_http_client/server/error_spec.rb
+++ b/spec/chimera_http_client/server/error_spec.rb
@@ -30,7 +30,7 @@
 
   let(:connection) { ChimeraHttpClient::Connection.new(base_url: base_url, deserializer: deserializer, timeout: timeout) }
   let(:base_url) { "#{UsersServer.endpoint_url}/api/v1" }
-  let(:deserializer) { { error: ::ChimeraHttpClient::Deserializer.json_error } }
+  let(:deserializer) { { error: ChimeraHttpClient::Deserializer.json_error } }
   let(:timeout) { 0.2 }
 
   let(:expected_parsed_body) { { message: "error #{failure_code}" } }
diff --git a/spec/chimera_http_client/server/queue_spec.rb b/spec/chimera_http_client/server/queue_spec.rb
index fff68f1..aaa0971 100644
--- a/spec/chimera_http_client/server/queue_spec.rb
+++ b/spec/chimera_http_client/server/queue_spec.rb
@@ -1,6 +1,6 @@
 require "server_spec_helper"
 
-describe ChimeraHttpClient::Queue do # rubocop:disable RSpec/FilePath
+describe ChimeraHttpClient::Queue do
   let(:queue) { described_class.new(base_url: base_url) }
   let(:base_url) { "#{UsersServer.endpoint_url}/api/v1" }
 
diff --git a/spec/chimera_http_client/server/request_spec.rb b/spec/chimera_http_client/server/request_spec.rb
index ee684cd..81e1459 100644
--- a/spec/chimera_http_client/server/request_spec.rb
+++ b/spec/chimera_http_client/server/request_spec.rb
@@ -16,11 +16,11 @@
     end
 
     it "does not have a response" do
-      expect(request.request.response).to eq(nil)
+      expect(request.request.response).to be_nil
     end
 
     it "does have an empty result" do
-      expect(request.result).to eq(nil)
+      expect(request.result).to be_nil
     end
   end
 
diff --git a/spec/chimera_http_client/server/response_spec.rb b/spec/chimera_http_client/server/response_spec.rb
index 23cd8be..c48545f 100644
--- a/spec/chimera_http_client/server/response_spec.rb
+++ b/spec/chimera_http_client/server/response_spec.rb
@@ -20,7 +20,7 @@
 
   let(:connection) { ChimeraHttpClient::Connection.new(base_url: base_url, deserializer: deserializer, timeout: timeout) }
   let(:base_url) { "#{UsersServer.endpoint_url}/api/v1" }
-  let(:deserializer) { { response: ::ChimeraHttpClient::Deserializer.json_response } }
+  let(:deserializer) { { response: ChimeraHttpClient::Deserializer.json_response } }
   let(:timeout) { 0.2 }
 
   let(:response_code) { 200 }
diff --git a/spec/chimera_http_client/stubbed/error_spec.rb b/spec/chimera_http_client/stubbed/error_spec.rb
index c2fe843..3d4e89b 100644
--- a/spec/chimera_http_client/stubbed/error_spec.rb
+++ b/spec/chimera_http_client/stubbed/error_spec.rb
@@ -31,7 +31,7 @@
     Typhoeus::Response.new(code: failure_code, body: failure_body, total_time: response_time)
                       .tap { |resp| resp.request = Typhoeus::Request.new(base_url, method: method) }
   end
-  let(:deserializer) { { error: ::ChimeraHttpClient::Deserializer.json_error } }
+  let(:deserializer) { { error: ChimeraHttpClient::Deserializer.json_error } }
   let(:expected_parsed_body) { { "errors" => [{ "code" => failure_code }] } }
   let(:failure_body) { expected_parsed_body.to_json }
   let(:response_time) { 0.5 }
diff --git a/spec/chimera_http_client/stubbed/queue_spec.rb b/spec/chimera_http_client/stubbed/queue_spec.rb
index 13ca9f2..b310c6a 100644
--- a/spec/chimera_http_client/stubbed/queue_spec.rb
+++ b/spec/chimera_http_client/stubbed/queue_spec.rb
@@ -1,6 +1,6 @@
 require "spec_helper"
 
-describe ChimeraHttpClient::Queue do # rubocop:disable RSpec/FilePath
+describe ChimeraHttpClient::Queue do
   let(:queue) { described_class.new(base_url: base_url) }
   let(:base_url) { "http://127.0.0.1:3000/v1" }
 
diff --git a/spec/chimera_http_client/stubbed/request_spec.rb b/spec/chimera_http_client/stubbed/request_spec.rb
index 65d4887..31455fe 100644
--- a/spec/chimera_http_client/stubbed/request_spec.rb
+++ b/spec/chimera_http_client/stubbed/request_spec.rb
@@ -16,11 +16,11 @@
     end
 
     it "does not have a response" do
-      expect(request.request.response).to eq(nil)
+      expect(request.request.response).to be_nil
     end
 
     it "does have an empty result" do
-      expect(request.result).to eq(nil)
+      expect(request.result).to be_nil
     end
   end
 
@@ -29,7 +29,7 @@
 
     let(:url) { "http://127.0.0.1/dummy" }
     let(:typhoeus_response) { Typhoeus::Response.new(code: response_code, body: response_json, total_time: response_time) }
-    let(:deserializer) { { error: ::ChimeraHttpClient::Deserializer.json_error } }
+    let(:deserializer) { { error: ChimeraHttpClient::Deserializer.json_error } }
     let(:response_body) { { "id" => 42, "name" => "Andy" } }
     let(:response_json) { response_body.to_json }
     let(:response_time) { 0.5 }
diff --git a/spec/chimera_http_client/stubbed/response_spec.rb b/spec/chimera_http_client/stubbed/response_spec.rb
index 28f3141..1ac7796 100644
--- a/spec/chimera_http_client/stubbed/response_spec.rb
+++ b/spec/chimera_http_client/stubbed/response_spec.rb
@@ -18,7 +18,7 @@
   subject(:response) { described_class.new(typhoeus_response, deserializer: deserializer) }
 
   let(:typhoeus_response) { Typhoeus::Response.new(code: response_code, body: response_json, total_time: response_time) }
-  let(:deserializer) { { response: ::ChimeraHttpClient::Deserializer.json_response } }
+  let(:deserializer) { { response: ChimeraHttpClient::Deserializer.json_response } }
 
   let(:response_code) { 200 }
   let(:response_body) { { "id" => 42, "name" => "Andy" } }