diff --git a/test/integration/runner.rb b/test/integration/runner.rb
index 6f2eee0..ddc4082 100644
--- a/test/integration/runner.rb
+++ b/test/integration/runner.rb
@@ -1,4 +1,4 @@
-require './lib'
+require_relative './lib'
 
 exit Test::Unit::AutoRunner::run(true, __dir__)
 
diff --git a/test/integration/test_simple.rb b/test/integration/test_simple.rb
index 4053570..3a3096d 100644
--- a/test/integration/test_simple.rb
+++ b/test/integration/test_simple.rb
@@ -1,4 +1,4 @@
-require './lib'
+require_relative './lib'
 
 class Simple < IntegrationTest
   P_ADDER = 'testpack-adder'