diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6bb6099..c85249d 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        ruby-version: [ "3.0", "3.1", "3.2", "3.3" ]
+        ruby-version: [ "3.3", "3.4", "4.0" ]
 
     steps:
       - name: Checkout
diff --git a/lib/openxml-package/version.rb b/lib/openxml-package/version.rb
index ccb0440..154f9fb 100644
--- a/lib/openxml-package/version.rb
+++ b/lib/openxml-package/version.rb
@@ -1,3 +1,3 @@
 module OpenXmlPackage
-  VERSION = "0.3.5"
+  VERSION = "0.3.6"
 end
diff --git a/lib/openxml/package.rb b/lib/openxml/package.rb
index fa4a049..7171e91 100644
--- a/lib/openxml/package.rb
+++ b/lib/openxml/package.rb
@@ -32,17 +32,7 @@ def open(path)
 
       def from_stream(stream)
         stream = StringIO.new(stream) if stream.is_a?(String)
-
-        # Hack: Zip::Entry.read_c_dir_entry initializes
-        # a new Zip::Entry by calling `io.path`. Zip::Entry
-        # uses this to open the original zipfile; but in
-        # this case, the StringIO _is_ the original.
-        def stream.path
-          self
-        end
-
-        zipfile = ::Zip::File.new("", true, true)
-        zipfile.read_from_stream(stream)
+        zipfile = ::Zip::File.new(stream, create: true, buffer: true)
         new(zipfile)
       end
     end
diff --git a/openxml-package.gemspec b/openxml-package.gemspec
index bf3bfc1..73072da 100644
--- a/openxml-package.gemspec
+++ b/openxml-package.gemspec
@@ -19,13 +19,16 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.add_dependency "rubyzip", "~> 2.3"
+  spec.add_dependency "rubyzip", "~> 3.4"
   spec.add_dependency "nokogiri"
   spec.add_dependency "ox"
+  spec.add_dependency "bigdecimal"
+  spec.add_dependency "mutex_m"
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
   spec.add_development_dependency "minitest"
+  spec.add_development_dependency "minitest-mock"
   spec.add_development_dependency "minitest-reporters"
   spec.add_development_dependency "minitest-reporters-turn_reporter"
   spec.add_development_dependency "pry"
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 5958bce..96ffdca 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -7,6 +7,7 @@
 end
 
 require "rr"
+require "minitest/mock"
 
 require "minitest/reporters/turn_reporter"
 Minitest::Reporters.use! Minitest::Reporters::TurnReporter.new