diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 5a84f3b..5b5c85b 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -24,7 +24,7 @@ jobs:
         printf -- "---\n:rubygems_api_key: ${GEM_HOST_API_KEY}\n" > $HOME/.gem/credentials
     - name: Install dependencies
       run: |
-        gem update --system 3.2.3
+        gem update --system 3.5.11
         bundle install
     - name: Release
       run: |
diff --git a/Gemfile b/Gemfile
index dbc2356..8253e48 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,5 +3,5 @@ source "https://rubygems.org"
 # Specify your gem's dependencies in dockerapi.gemspec
 gemspec
 
-gem "rake", "~> 12.0"
+gem "rake", "~> 13.0"
 gem "rspec", "~> 3.0"
diff --git a/Gemfile.lock b/Gemfile.lock
index eecaf16..b2f4551 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,14 +2,16 @@ PATH
   remote: .
   specs:
     dockerapi (0.20.0)
-      excon (~> 0.79)
+      base64
+      excon (>= 0.97, < 2)
 
 GEM
   remote: https://rubygems.org/
   specs:
+    base64 (0.2.0)
     diff-lcs (1.5.1)
-    excon (0.112.0)
-    rake (12.3.3)
+    excon (1.1.1)
+    rake (13.2.1)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -30,7 +32,7 @@ PLATFORMS
 
 DEPENDENCIES
   dockerapi!
-  rake (~> 12.0)
+  rake (~> 13.0)
   rspec (~> 3.0)
 
 BUNDLED WITH
diff --git a/dockerapi.gemspec b/dockerapi.gemspec
index bad65f8..e8b153d 100644
--- a/dockerapi.gemspec
+++ b/dockerapi.gemspec
@@ -10,11 +10,11 @@ Gem::Specification.new do |spec|
   spec.description   = "Interact with Docker API directly from Ruby code. Comprehensive implementation (all available endpoints), no local Docker installation required, easily manipulated http responses."
   spec.homepage      = "https://github.com/nu12/dockerapi"
   spec.license       = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.3.0")
+  spec.required_ruby_version = ">= 3.0"
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/nu12/dockerapi.git"
-  spec.metadata["changelog_uri"] = "https://github.com/nu12/dockerapi/blob/master/CHANGELOG.md"
+  spec.metadata["changelog_uri"] = "https://github.com/nu12/dockerapi/blob/main/CHANGELOG.md"
   spec.metadata["documentation_uri"] = "https://www.rubydoc.info/gems/dockerapi"
 
   # Specify which files should be added to the gem when it is released.
@@ -26,5 +26,6 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_dependency("excon", "~> 0.79")
+  spec.add_dependency("base64")
+  spec.add_dependency("excon", ">= 0.97", "< 2")
 end
diff --git a/lib/docker/api/base.rb b/lib/docker/api/base.rb
index 49f0c9b..57aff2c 100644
--- a/lib/docker/api/base.rb
+++ b/lib/docker/api/base.rb
@@ -18,7 +18,7 @@ def initialize connection = nil
     # Output to stdout.
     def default_streamer
         streamer = lambda do |chunk, remaining_bytes, total_bytes|
-            p chunk.to_s.encode('UTF-8', invalid: :replace, undef: :replace, replace: '?') if Docker::API::PRINT_TO_STDOUT
+            p chunk.to_s.encode('UTF-8', invalid: :replace, undef: :replace, replace: '?') if Docker::API.print_to_stdout
         end
         streamer
     end
diff --git a/lib/docker/api/connection.rb b/lib/docker/api/connection.rb
index 81bc5f1..8a91c6e 100644
--- a/lib/docker/api/connection.rb
+++ b/lib/docker/api/connection.rb
@@ -11,7 +11,7 @@ class Docker::API::Connection
     # @param params [Hash]: Request parameters.
     def request params
         response = Docker::API::Response.new(@connection.request(params).data)
-        p response if Docker::API::PRINT_RESPONSE_TO_STDOUT 
+        p response if Docker::API.print_response_to_stdout 
         response
     end
     
diff --git a/lib/dockerapi.rb b/lib/dockerapi.rb
index 769151e..b1cf87b 100644
--- a/lib/dockerapi.rb
+++ b/lib/dockerapi.rb
@@ -27,11 +27,23 @@ module API
 
     ##
     # This variable controls output verbosity.
-    PRINT_TO_STDOUT = true
+    def self.print_to_stdout
+      @@print_to_stdout
+    end
+    def self.print_to_stdout=(bool)
+      @@print_to_stdout = bool
+    end
+    self.print_to_stdout = true
 
     ##
     # This variable controls output verbosity.
-    PRINT_RESPONSE_TO_STDOUT = false
+    def self.print_response_to_stdout
+      @@print_response_to_stdout
+    end
+    def self.print_response_to_stdout=(bool)
+      @@print_response_to_stdout = bool
+    end
+    self.print_response_to_stdout = false
 
     ##
     # Valid values for parameter validations.
diff --git a/spec/endpoints/image_spec.rb b/spec/endpoints/image_spec.rb
index d7fab87..fedb868 100644
--- a/spec/endpoints/image_spec.rb
+++ b/spec/endpoints/image_spec.rb
@@ -17,7 +17,7 @@
             it { expect(subject.create(fromSrc: path, repo: image, message: "Imported with dockerapi").status).to eq(200) }
         end
         context "from remote tar file" do
-            let(:url) { "https://github.com/nu12/dockerapi/blob/master/resources/busybox.tar?raw=true" }
+            let(:url) { "https://github.com/nu12/dockerapi/raw/refs/heads/main/resources/busybox.tar" }
             it { expect(subject.create(fromSrc: url).status).to eq(200) }
             it { expect(subject.create(fromSrc: url, repo: image, message: "Imported with dockerapi").status).to eq(200) }
             it { expect(subject.create(fromSrc: "http://404").status).to eq(500) }
@@ -175,7 +175,7 @@
         it { expect(subject.build("resources/build.tar.xz", memory: 4000000, rm: true, forcerm:true).status).to eq(200) }
         it { expect(subject.build("resources/build.tar.xz", memory: 4000000, rm: true, forcerm:true, pull:true).status).to eq(200) }
         it { expect(subject.build(nil, remote: "https://github.com/nu12/dockerapi/raw/refs/heads/main/resources/build.tar.xz").status).to eq(200) }
-        it { expect(subject.build(nil, remote: "https://raw.githubusercontent.com/nu12/dockerapi/master/resources/Dockerfile").status).to eq(200) }
+        it { expect(subject.build(nil, remote: "https://raw.githubusercontent.com/nu12/dockerapi/main/resources/Dockerfile").status).to eq(200) }
         it { expect{subject.build("resources/build.tar.xz", invalid: "invalid")}.to raise_error(Docker::API::InvalidParameter) }
         it { expect{subject.build(nil, remote: "https://github.com/nu12/dockerapi/raw/refs/heads/main/resources/build.tar.xz", invalid: "invalid")}.to raise_error(Docker::API::InvalidParameter) }
         it { expect{subject.build(nil, invalid: "invalid", skip_validation: true)}.to raise_error(Docker::API::Error) }
@@ -223,7 +223,7 @@
 
             described_class.new.tag(original, repo: local)
 
-            Docker::API::PRINT_RESPONSE_TO_STDOUT = true
+            Docker::API.print_response_to_stdout = true
         end
 
         it { expect(Docker::API::Container.new.list.json.size).to be > 0 }
@@ -248,7 +248,7 @@
         end
         
         after(:all) do
-            Docker::API::PRINT_RESPONSE_TO_STDOUT = false
+            Docker::API.print_response_to_stdout = false
 
             container = Docker::API::Container.new
             container.stop("registry")
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 6049973..d427246 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,9 +1,9 @@
 require "bundler/setup"
 require "dockerapi"
 
-Docker::API::PRINT_TO_STDOUT = false
+Docker::API.print_to_stdout = false
 
-Docker::API::PRINT_RESPONSE_TO_STDOUT = false
+Docker::API.print_response_to_stdout = false
 
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure