socrates.gemspec in socrates-0.1.18 vs socrates.gemspec in socrates-0.1.19

@@ -1,6 +1,6 @@
-lib = File.expand_path("../lib", __FILE__)
+lib = File.expand_path("lib", __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 
 require "socrates/version"
 
 Gem::Specification.new do |spec|
@@ -19,19 +19,19 @@
 
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.3.0"
+  spec.required_ruby_version = ">= 2.4.0"
 
-  spec.add_development_dependency "bundler", "~> 1.15"
-  spec.add_development_dependency "rake", "~> 12.1"
-  spec.add_development_dependency "rspec", "~> 3.6"
-  spec.add_development_dependency "rubocop", "~> 0.50.0"
-  spec.add_development_dependency "timecop", "~> 0.9.1"
+  spec.add_development_dependency "bundler", "~> 1.16"
+  spec.add_development_dependency "rake", "~> 12.3"
+  spec.add_development_dependency "rspec", "~> 3.7"
+  spec.add_development_dependency "rubocop", "~> 0.52"
+  spec.add_development_dependency "timecop", "~> 0.9"
 
   spec.add_dependency "activesupport", ">= 5.1.4"
   spec.add_dependency "celluloid-io", ">= 0.17.3"
-  spec.add_dependency "hashie", ">= 3.5.6"
-  spec.add_dependency "redis", ">= 4.0.0"
-  spec.add_dependency "slack-ruby-client", ">= 0.9.1"
+  spec.add_dependency "hashie", ">= 3.5.7"
+  spec.add_dependency "redis", ">= 4.0.1"
+  spec.add_dependency "slack-ruby-client", ">= 0.11.0"
 end