```ruby
# coding: utf-8
lib = File.expand_path("../lib", __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require "datetime_picker_input/version"

Gem::Specification.new do |spec|
  spec.name          = "datetime_picker_input"
  spec.version       = DatetimePickerInput::VERSION
  spec.authors       = %w(Juanito Fatas)
  spec.email         = %w(katehuang0320@gmail.com)
  spec.summary       = %(Datetime picker wrapper of https://github.com/TrevorS/bootstrap3-datetimepicker-rails, for use with simple_form on Rails 4+.)
  spec.description   = spec.summary
  spec.homepage      = "https://github.com/jollygoodcode/datetime_picker_input"
  spec.license       = "MIT"

  spec.files         = `git ls-files -z`.split("\x0")
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = Dir["spec/**/*"]
  spec.require_paths = %w(lib)

  spec.add_runtime_dependency "bootstrap3-datetimepicker-rails", "~> 4.17.37"
  spec.add_runtime_dependency "momentjs-rails", "~> 2.10.6"
end
```

Upgrade dependency gems, bootstrap3-datetimepicker-rails to 4.17.47 and momentjs-rails to 2.17.1.
user
```ruby
# coding: utf-8
lib = File.expand_path("../lib", __FILE__)
$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
require "datetime_picker_input/version"

Gem::Specification.new do |spec|
  spec.name          = "datetime_picker_input"
  spec.version       = DatetimePickerInput::VERSION
  spec.authors       = %w(Juanito Fatas)
  spec.email         = %w(katehuang0320@gmail.com)
  spec.summary       = %(Datetime picker wrapper of https://github.com/TrevorS/bootstrap3-datetimepicker-rails, for use with simple_form on Rails 4+.)
  spec.description   = spec.summary
  spec.homepage      = "https://github.com/jollygoodcode/datetime_picker_input"
  spec.license       = "MIT"

  spec.files         = `git ls-files -z`.split("\x0")
  spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
  spec.test_files    = Dir["spec/**/*"]
  spec.require_paths = %w(lib)

  spec.add_runtime_dependency "bootstrap3-datetimepicker-rails", "~> 4.17.47"
  spec.add_runtime_dependency "momentjs-rails", "~> 2.17.1"
end
```
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