diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5b90d9f81..53aa774a6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -54,7 +54,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ ubuntu-latest, macos-13, windows-latest ]
-        ruby: [ 2.5, 2.6, 2.7, 3.0, 3.1, 3.2, 3.3, ruby-head, truffleruby-head, jruby-head ]
+        ruby: [ 2.5, 2.6, 2.7, 3.0, 3.1, 3.2, 3.3, 3.4, ruby-head, truffleruby-head, jruby-head ]
         exclude:
         - os: windows-latest
           ruby: truffleruby-head
@@ -165,6 +165,7 @@ jobs:
           - macos-latest
           - ubuntu-latest
         ruby:
+          - "3.4"
           - "3.3"
           - "3.2"
           - "3.1"
@@ -190,6 +191,9 @@ jobs:
           - os: windows-latest
             ruby: "3.3"
             platform: x64-mingw-ucrt
+          - os: windows-latest
+            ruby: "3.4"
+            platform: x64-mingw-ucrt
         exclude:
           - os: macos-latest
             ruby: "2.5"
@@ -199,6 +203,8 @@ jobs:
             ruby: "3.2"
           - os: windows-latest
             ruby: "3.3"
+          - os: windows-latest
+            ruby: "3.4"
 
     runs-on: ${{ matrix.os }}
     steps:
diff --git a/Gemfile b/Gemfile
index 797c34aa9..49fb10cf8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,7 +5,7 @@ group :development do
   gem 'bundler', '>= 1.16', '< 3'
   gem 'rake', '~> 13.0'
   gem 'rake-compiler', '~> 1.1'
-  gem 'rake-compiler-dock', '~> 1.0.pre'
+  gem 'rake-compiler-dock', '~> 1.7.0'
   gem 'rspec', '~> 3.0'
 end
 
diff --git a/Rakefile b/Rakefile
index 376132d12..b0d9ebc98 100644
--- a/Rakefile
+++ b/Rakefile
@@ -136,7 +136,7 @@ namespace "gem" do
     desc "Build the native gem for #{plat}"
     task plat => ['prepare', 'build'] do
       RakeCompilerDock.sh <<-EOT, platform: plat
-        #{ "sudo apt-get update && sudo apt-get install -y libltdl-dev &&" if plat !~ /linux/ }
+        sudo apt-get update && sudo apt-get install -y libltdl-dev &&
         bundle --local &&
         rake native:#{plat} pkg/#{gem_spec.full_name}-#{plat}.gem MAKE='nice make -j`nproc`' RUBY_CC_VERSION=${RUBY_CC_VERSION/:2.4.0/}
       EOT