diff --git a/spec/nio/selectables/udp_socket_spec.rb b/spec/nio/selectables/udp_socket_spec.rb
index 5b4e793..a727568 100644
--- a/spec/nio/selectables/udp_socket_spec.rb
+++ b/spec/nio/selectables/udp_socket_spec.rb
@@ -2,7 +2,7 @@
 
 require "spec_helper"
 
-RSpec.describe UDPSocket do
+RSpec.describe UDPSocket, if: !defined?(JRUBY_VERSION) do
   let(:udp_port) { 23_456 }
 
   let :readable_subject do