unitsml.gemspec in unitsml-0.2.7 vs unitsml.gemspec in unitsml-0.2.8

@@ -25,11 +25,11 @@
 
   spec.bindir        = "exe"
   spec.executables   = spec.files.grep(%r{^exe/}) { |f| File.basename(f) }
   spec.require_paths = ["lib", "unitsdb/**/*.yaml"]
 
-  spec.add_dependency "plurimath"
   spec.add_dependency "htmlentities"
+  spec.add_dependency "plurimath", "~> 0.8.4"
   spec.add_development_dependency "byebug"
   spec.add_development_dependency "equivalent-xml"
   spec.add_development_dependency "pry", "~> 0.12.2"
   spec.add_development_dependency "rake", "~> 12.0"
   spec.add_development_dependency "rspec", "~> 3.6"