diff --git a/.ruby-version b/.ruby-version
index ef538c2..fa7adc7 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.2
+3.3.5
diff --git a/dwc-archive.gemspec b/dwc-archive.gemspec
index 9f7e897..575a127 100644
--- a/dwc-archive.gemspec
+++ b/dwc-archive.gemspec
@@ -22,16 +22,15 @@ Gem::Specification.new do |gem|
   gem.require_paths = ["lib"]
 
   # gem.add_runtime_dependency "minitar", "~> 0.6"
-  gem.add_runtime_dependency "biodiversity", "~> 5.7.2"
-  gem.add_runtime_dependency "nokogiri", "~> 1.14"
+  gem.add_runtime_dependency "biodiversity", "~> 6.0"
+  gem.add_runtime_dependency "nokogiri", "~> 1.16"
 
-  gem.add_development_dependency "bundler", "~> 2.4"
+  gem.add_development_dependency "bundler", "~> 2.5"
   gem.add_development_dependency "byebug", "~> 11.1"
-  gem.add_development_dependency "cucumber", "~> 8"
-  gem.add_development_dependency "git", "~> 1.18"
-  gem.add_development_dependency "rake", "~> 13.0"
-  gem.add_development_dependency "rspec", "~> 3.12"
-  gem.add_development_dependency "rubocop", "~> 1.50"
-  gem.add_development_dependency "solargraph", "~> 0.49"
-  gem.add_development_dependency "travis", "~> 1.11"
+  gem.add_development_dependency "cucumber", "~> 9"
+  gem.add_development_dependency "git", "~> 2.3"
+  gem.add_development_dependency "rake", "~> 13.2"
+  gem.add_development_dependency "rspec", "~> 3.13"
+  gem.add_development_dependency "rubocop", "~> 1.66"
+gem.add_development_dependency "ruby-lsp", "~> 0.17"
 end
diff --git a/lib/dwc_archive.rb b/lib/dwc_archive.rb
index 4ea298e..82ee8c6 100644
--- a/lib/dwc_archive.rb
+++ b/lib/dwc_archive.rb
@@ -34,11 +34,11 @@ class << self
     attr_writer :logger
 
     def clean(path)
-      FileUtils.rm_rf(path) if FileTest.exists?(path)
+      FileUtils.rm_rf(path) if FileTest.exist?(path)
     end
 
     def files(path)
-      return nil unless path && FileTest.exists?(path)
+      return nil unless path && FileTest.exist?(path)
 
       Dir.entries(path).reject { |e| e.match(/[.]{1,2}$/) }.sort
     end
diff --git a/lib/dwc_archive/archive.rb b/lib/dwc_archive/archive.rb
index a95f8d8..080e80b 100644
--- a/lib/dwc_archive/archive.rb
+++ b/lib/dwc_archive/archive.rb
@@ -16,7 +16,7 @@ def initialize(archive_path, tmp_dir)
 
     def valid?
       valid = true
-      valid = valid && @expander.path && FileTest.exists?(@expander.path)
+      valid = valid && @expander.path && FileTest.exist?(@expander.path)
       valid && files && files.include?("meta.xml")
     end