diff --git a/oargun.gemspec b/oargun.gemspec
index 3e8190f..fb1ea3e 100644
--- a/oargun.gemspec
+++ b/oargun.gemspec
@@ -27,6 +27,6 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'rest-client', '~> 1.7'
   spec.add_dependency 'linked_vocabs', '~> 0.2'
   spec.add_dependency 'rdf-vocab', '~> 0.8'
-  spec.add_dependency 'active-triples', '~> 0.6.0'
+  spec.add_dependency 'active-triples', '>= 0.6.0'
   spec.add_dependency 'active-fedora', '~> 9.0'
 end