relaton_ietf.gemspec in relaton-ietf-1.4.0 vs relaton_ietf.gemspec in relaton-ietf-1.5.pre

- old
+ new

@@ -38,7 +38,7 @@
   spec.add_development_dependency "ruby-jing"
   spec.add_development_dependency "simplecov"
   spec.add_development_dependency "vcr"
   spec.add_development_dependency "webmock"
 
-  spec.add_dependency "relaton-bib", "~> 1.4.0"
+  spec.add_dependency "relaton-bib", "~> 1.5.pre"
 end