1 files changed, 3 insertions, 3 deletions
diff --git a/Gemfile b/Gemfile
index 260a5b5..e0ee521 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,5 @@
 source 'https://rubygems.org'
 
-gem 'rdf'
-gem 'rdf-rdfxml'
-gem 'nokogiri'
+gem 'rdf', '~> 3.2'
+gem 'rdf-rdfxml', '~> 3.2'
+gem 'nokogiri', '>= 1.10.3'