rspreadsheet.gemspec in rspreadsheet-0.5.1 vs rspreadsheet.gemspec in rspreadsheet-0.5.3

@@ -26,28 +26,28 @@
     (system("pkg_info -q -e '#{pkgname}-*' >/dev/null 2>&1")==true)           # OpenBSD and alike (although OpenBSD registers the gem as a gem, so this is perhaps unnecessary
   end
 
   # runtime dependencies
   unless package_natively_installed?('ruby-libxml')
-    spec.add_runtime_dependency 'libxml-ruby', '3.0'   # parsing XML files
+    spec.add_runtime_dependency 'libxml-ruby', '>=3.0'   # parsing XML files
   end
-  spec.add_runtime_dependency 'rubyzip', '~>1.1'       # opening zip files
-  spec.add_runtime_dependency 'andand', '~>1.3'
+  spec.add_runtime_dependency 'rubyzip', '>=1.3'       # opening zip files
+  spec.add_runtime_dependency 'andand', '>=1.3'
 
   # development dependencies
+
+  spec.add_development_dependency "bundler", '>= 1.5', '<3'   # some 2.5 rubyies contain already bundler 2 included
   if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.4.5')
     # ruby 2.4.5 and up
-    spec.add_development_dependency "bundler", '>= 1.5', '<3'   # some 2.5 rubyies contain already bundler 2 included
-    spec.add_development_dependency "rake", '~>10.0'
+    spec.add_development_dependency "rake", '>=10.0'
   else
     # ruby up to 2.4.5
-    spec.add_development_dependency "bundler", '~> 1.5'
     spec.add_development_dependency "rake", '~>0.9'
   end
   # testig - see http://bit.ly/1n5yM51
-  spec.add_development_dependency "rspec", '~>2.0'       # running tests
-  spec.add_development_dependency 'pry-nav', '~>0.0'     # enables pry 'next', 'step' commands
-  spec.add_development_dependency "coveralls", '~>0.7' # inspecting coverage of tests
+  spec.add_development_dependency "rspec", '>=2.0'       # running tests
+  spec.add_development_dependency 'pry-nav', '>=0.0'     # enables pry 'next', 'step' commands
+  spec.add_development_dependency "coveralls", '>=0.7' # inspecting coverage of tests
 
 
   # optional and testing
   if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new('2.2.5')
 #    spec.add_development_dependency "guard", '~>2.13'