diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 88e4ddf..ba148e5 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -12,7 +12,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [ '2.5', '2.6', '2.7', '3.0', '3.1', '3.2' ]
+        ruby: [ '2.7', '3.0', '3.1', '3.2' ]
     env:
       RUBY_IMAGE: ${{ matrix.ruby }} # The image used in the Dockerfile
     name: Ruby ${{ matrix.ruby }}
diff --git a/.rubocop.yml b/.rubocop.yml
index 68938be..4f45101 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -7,7 +7,7 @@ inherit_gem:
   standard: config/base.yml
 
 AllCops:
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 2.7
   Exclude:
     - 'tmp/**/*'
   NewCops: enable
diff --git a/dip.gemspec b/dip.gemspec
index d26f053..a7d7a60 100644
--- a/dip.gemspec
+++ b/dip.gemspec
@@ -32,7 +32,7 @@ Gem::Specification.new do |spec|
   spec.executables = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.5"
+  spec.required_ruby_version = ">= 2.7"
 
   spec.add_dependency "thor", ">= 0.20", "< 2"
 
diff --git a/lib/dip/command.rb b/lib/dip/command.rb
index 7216e38..0b46291 100644
--- a/lib/dip/command.rb
+++ b/lib/dip/command.rb
@@ -11,7 +11,7 @@ class Command
     class ProgramRunner
       def self.call(cmdline, env: {}, **options)
         if cmdline.is_a?(Array)
-          ::Kernel.exec(env, cmdline[0], *cmdline[1..-1], **options)
+          ::Kernel.exec(env, cmdline[0], *cmdline[1..], **options)
         else
           ::Kernel.exec(env, cmdline, **options)
         end