diff --git a/Gemfile b/Gemfile
index fa6c1bd..7061c75 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,6 @@
 source "http://rubygems.org"
 
 group :development do
-  gem "juwelier", "~> 2.0"
   gem "rspec_junit_formatter"
 end
 
diff --git a/ruby-plsql.gemspec b/ruby-plsql.gemspec
index 07d5a69..dfe3442 100644
--- a/ruby-plsql.gemspec
+++ b/ruby-plsql.gemspec
@@ -1,116 +1,27 @@
-# Generated by juwelier
-# DO NOT EDIT THIS FILE DIRECTLY
-# Instead, edit Juwelier::Tasks in Rakefile, and run 'rake gemspec'
 # -*- encoding: utf-8 -*-
 
-# stub: ruby-plsql 0.8.0 ruby lib
-
 Gem::Specification.new do |s|
-  s.name = "ruby-plsql".freeze
-  s.version = "0.8.0"
+  s.name = "ruby-plsql"
+  s.version = File.read(File.expand_path("VERSION", __dir__)).chomp
 
-  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
-  s.require_paths = ["lib".freeze]
-  s.authors = ["Raimonds Simanovskis".freeze]
-  s.date = "2018-09-03"
-  s.description = "  ruby-plsql gem provides simple Ruby API for calling Oracle PL/SQL procedures.\n  It could be used both for accessing Oracle PL/SQL API procedures in legacy applications\n  as well as it could be used to create PL/SQL unit tests using Ruby testing libraries.\n".freeze
-  s.email = "raimonds.simanovskis@gmail.com".freeze
-  s.extra_rdoc_files = [
-    "README.md"
-  ]
-  s.files = [
-    ".github/stale.yml",
-    ".rubocop.yml",
-    "Gemfile",
-    "History.txt",
-    "License.txt",
-    "README.md",
-    "Rakefile",
-    "VERSION",
-    "Vagrantfile",
-    "gemfiles/Gemfile.activerecord-5.0",
-    "gemfiles/Gemfile.activerecord-5.1",
-    "gemfiles/Gemfile.activerecord-5.2",
-    "gemfiles/Gemfile.activerecord-6.0",
-    "gemfiles/Gemfile.activerecord-6.1",
-    "gemfiles/Gemfile.activerecord-7.0",
-    "gemfiles/Gemfile.activerecord-7.1",
-    "gemfiles/Gemfile.activerecord-7.2",
-    "gemfiles/Gemfile.activerecord-8.0",
-    "gemfiles/Gemfile.activerecord-main",
-    "lib/plsql/connection.rb",
-    "lib/plsql/helpers.rb",
-    "lib/plsql/jdbc_connection.rb",
-    "lib/plsql/oci8_patches.rb",
-    "lib/plsql/oci_connection.rb",
-    "lib/plsql/package.rb",
-    "lib/plsql/procedure.rb",
-    "lib/plsql/procedure_call.rb",
-    "lib/plsql/schema.rb",
-    "lib/plsql/sequence.rb",
-    "lib/plsql/sql_statements.rb",
-    "lib/plsql/table.rb",
-    "lib/plsql/type.rb",
-    "lib/plsql/variable.rb",
-    "lib/plsql/version.rb",
-    "lib/plsql/view.rb",
-    "lib/ruby-plsql.rb",
-    "lib/ruby_plsql.rb",
-    "ruby-plsql.gemspec",
-    "spec/plsql/connection_spec.rb",
-    "spec/plsql/package_spec.rb",
-    "spec/plsql/procedure_spec.rb",
-    "spec/plsql/schema_spec.rb",
-    "spec/plsql/sequence_spec.rb",
-    "spec/plsql/sql_statements_spec.rb",
-    "spec/plsql/table_spec.rb",
-    "spec/plsql/type_spec.rb",
-    "spec/plsql/variable_spec.rb",
-    "spec/plsql/version_spec.rb",
-    "spec/plsql/view_spec.rb",
-    "spec/spec.opts",
-    "spec/spec_helper.rb",
-    "spec/support/create_arunit_user.sql",
-    "spec/support/custom_config.rb.sample",
-    "spec/support/file_check_script.sh",
-    "spec/support/test_db.rb",
-    "spec/support/unlock_and_setup_hr_user.sql"
-  ]
-  s.homepage = "http://github.com/rsim/ruby-plsql".freeze
-  s.licenses = ["MIT".freeze]
-  s.rubygems_version = "2.7.7".freeze
-  s.summary = "Ruby API for calling Oracle PL/SQL procedures.".freeze
+  s.authors = ["Raimonds Simanovskis"]
+  s.email = "raimonds.simanovskis@gmail.com"
+  s.summary = "Ruby API for calling Oracle PL/SQL procedures."
+  s.description = <<~DESC.strip
+    ruby-plsql gem provides simple Ruby API for calling Oracle PL/SQL procedures.
+    It could be used both for accessing Oracle PL/SQL API procedures in legacy applications
+    as well as it could be used to create PL/SQL unit tests using Ruby testing libraries.
+  DESC
+  s.homepage = "https://github.com/rsim/ruby-plsql"
+  s.license = "MIT"
 
-  if s.respond_to? :specification_version then
-    s.specification_version = 4
+  s.require_paths = ["lib"]
+  s.files = Dir["lib/**/*.rb", "VERSION", "License.txt", "README.md", "History.txt"]
+  s.extra_rdoc_files = ["README.md"]
 
-    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new("1.2.0") then
-      s.add_development_dependency("juwelier".freeze, ["~> 2.0"])
-      s.add_development_dependency("rspec_junit_formatter".freeze, [">= 0"])
-      s.add_development_dependency("rake".freeze, [">= 10.0"])
-      s.add_development_dependency("rspec".freeze, ["~> 3.1"])
-      s.add_development_dependency("activerecord".freeze, ["~> 5.0"])
-      s.add_development_dependency("activerecord-oracle_enhanced-adapter".freeze, ["~> 1.7"])
-      s.add_development_dependency("simplecov".freeze, [">= 0"])
-      s.add_development_dependency("ruby-oci8".freeze, ["~> 2.1"])
-    else
-      s.add_dependency("juwelier".freeze, ["~> 2.0"])
-      s.add_dependency("rspec_junit_formatter".freeze, [">= 0"])
-      s.add_dependency("rake".freeze, [">= 10.0"])
-      s.add_dependency("rspec".freeze, ["~> 3.1"])
-      s.add_dependency("activerecord".freeze, ["~> 5.0"])
-      s.add_dependency("activerecord-oracle_enhanced-adapter".freeze, ["~> 1.7"])
-      s.add_dependency("simplecov".freeze, [">= 0"])
-      s.add_dependency("ruby-oci8".freeze, ["~> 2.1"])
-    end
-  else
-    s.add_dependency("juwelier".freeze, ["~> 2.0"])
-    s.add_dependency("rspec_junit_formatter".freeze, [">= 0"])
-    s.add_dependency("rake".freeze, [">= 10.0"])
-    s.add_dependency("rspec".freeze, ["~> 3.1"])
-    s.add_dependency("activerecord".freeze, ["~> 5.0"])
-    s.add_dependency("activerecord-oracle_enhanced-adapter".freeze, ["~> 1.7"])
-    s.add_dependency("simplecov".freeze, [">= 0"])
-    s.add_dependency("ruby-oci8".freeze, ["~> 2.1"])
-  end
+  s.add_development_dependency "rake", ">= 10.0"
+  s.add_development_dependency "rspec", "~> 3.1"
+  s.add_development_dependency "rspec_junit_formatter"
+  s.add_development_dependency "simplecov"
+  s.add_development_dependency "ruby-oci8", "~> 2.1"
 end