wip

CI is erroring without this.

Author: AlistairNorman

solidus_importer.gemspec

@@ -31,6 +31,8 @@ Gem::Specification.new do |spec|
   spec.add_dependency "solidus_core", [">= 2.0.0", "< 5"]
   spec.add_dependency "solidus_support", "~> 0.5"
   spec.add_dependency "standard", "~> 1.49"
+  spec.add_development_dependency "bigdecimal"
+  spec.add_development_dependency "mutex_m"
 
   spec.add_development_dependency "solidus_dev_support", "~> 2.4"
 end