diff --git a/.github/workflows/ruby-tests.yml b/.github/workflows/ruby-tests.yml
index be01cfa..346fd08 100644
--- a/.github/workflows/ruby-tests.yml
+++ b/.github/workflows/ruby-tests.yml
@@ -14,10 +14,11 @@ jobs:
     strategy:
       matrix:
         ruby_version:
-          - 3.0
-          - 3.1
           - 3.2
           - 3.3
+          - 3.4
+          - 4.0
+
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby
diff --git a/.github/workflows/style-check.yml b/.github/workflows/style-check.yml
index f85ef49..5dca90b 100644
--- a/.github/workflows/style-check.yml
+++ b/.github/workflows/style-check.yml
@@ -23,7 +23,7 @@ jobs:
     - name: Set up Ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.3
+        ruby-version: 4.0
     - name: Install dependencies
       run: bundle install
     - name: Run Rubocop
diff --git a/.ruby-version b/.ruby-version
index 15a2799..1454f6e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.0
+4.0.1
diff --git a/Gemfile.lock b/Gemfile.lock
index 27e9485..9182744 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -2,7 +2,7 @@ PATH
   remote: .
   specs:
     stream_lines (0.4.1)
-      httparty (~> 0.14)
+      httparty (~> 0.24)
 
 GEM
   remote: https://rubygems.org/
@@ -131,10 +131,11 @@ GEM
 
 PLATFORMS
   ruby
+  x86_64-linux-gnu
 
 DEPENDENCIES
   awesome_print (~> 1.8)
-  bundler (~> 2.0)
+  bundler (~> 4.0)
   bundler-audit
   bundler-gem_version_tasks
   byebug
@@ -153,4 +154,4 @@ DEPENDENCIES
   webrick (~> 1.7)
 
 BUNDLED WITH
-   2.5.6
+  4.0.5
diff --git a/stream_lines.gemspec b/stream_lines.gemspec
index 08af875..847e563 100644
--- a/stream_lines.gemspec
+++ b/stream_lines.gemspec
@@ -26,10 +26,10 @@ Gem::Specification.new do |spec|
   spec.executables   = []
   spec.require_paths = ["lib"]
 
-  spec.add_runtime_dependency 'httparty', '~> 0.14'
+  spec.add_runtime_dependency 'httparty', '~> 0.24'
 
   spec.add_development_dependency 'awesome_print', '~> 1.8'
-  spec.add_development_dependency 'bundler', '~> 2.0'
+  spec.add_development_dependency 'bundler', '~> 4.0'
   spec.add_development_dependency 'bundler-audit'
   spec.add_development_dependency 'bundler-gem_version_tasks'
   spec.add_development_dependency 'byebug'