diff --git a/Gemfile b/Gemfile
index 0cb5c6a0e..fb80e24d5 100644
--- a/Gemfile
+++ b/Gemfile
@@ -157,3 +157,5 @@ gem 'concurrent-ruby', require: false
 gem 'connection_pool', require: false
 
 gem 'xorcist', '~> 1.1'
+
+gem 'resolv', '~> 0.1.0'
diff --git a/Gemfile.lock b/Gemfile.lock
index cae58b5e0..3c36e07bc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -498,6 +498,7 @@ GEM
     regexp_parser (2.1.1)
     request_store (1.5.0)
       rack (>= 1.4)
+    resolv (0.1.0)
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
@@ -773,6 +774,7 @@ DEPENDENCIES
   rdf-normalize (~> 0.4)
   redis (~> 4.2)
   redis-namespace (~> 1.8)
+  resolv (~> 0.1.0)
   rqrcode (~> 1.2)
   rspec-rails (~> 5.0)
   rspec-sidekiq (~> 3.1)