diff --git a/Gemfile b/Gemfile
index aa678073..e2d50dd1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -40,6 +40,10 @@ group :test do
     gem "rbnacl"
   end
 
+  platform :jruby do
+    gem "ruby-tls"
+  end
+
   gem "faraday"
   gem "oga"