daru.gemspec in daru-0.2.1 vs daru.gemspec in daru-0.2.2

@@ -31,11 +31,11 @@
 
   # it is required by NMatrix, yet we want to specify clearly which minimal version is OK
   spec.add_runtime_dependency 'packable', '~> 1.3.9'
 
   spec.add_development_dependency 'spreadsheet', '~> 1.1.1'
-  spec.add_development_dependency 'bundler', '~> 1.10'
+  spec.add_development_dependency 'bundler', '>= 1.10'
   spec.add_development_dependency 'rake', '~>10.5'
   spec.add_development_dependency 'pry', '~> 0.10'
   spec.add_development_dependency 'pry-byebug'
   spec.add_development_dependency 'rserve-client', '~> 0.3'
   spec.add_development_dependency 'rspec', '~> 3.4'
@@ -47,10 +47,12 @@
   spec.add_development_dependency 'gsl', '~>2.1.0.2'
   spec.add_development_dependency 'dbd-sqlite3'
   spec.add_development_dependency 'dbi'
   spec.add_development_dependency 'activerecord', '~> 4.0'
   spec.add_development_dependency 'mechanize'
-  spec.add_development_dependency 'sqlite3'
+  # issue : https://github.com/SciRuby/daru/issues/493 occured 
+  # with latest version of sqlite3
+  spec.add_development_dependency  'sqlite3', '~> 1.3.13'
   spec.add_development_dependency 'rubocop', '~> 0.49.0'
   spec.add_development_dependency 'ruby-prof'
   spec.add_development_dependency 'simplecov'
   spec.add_development_dependency 'gruff'
   spec.add_development_dependency 'webmock'