1 files changed, 2 insertions, 0 deletions
diff --git a/test/lib/test/unit.rb b/test/lib/test/unit.rb
index 51c8960c52..7a09466d1c 100644
--- a/test/lib/test/unit.rb
+++ b/test/lib/test/unit.rb
@@ -145,6 +145,8 @@ module Test
             r.close if r
             nil
           else
+            r.close_on_exec = true
+            w.close_on_exec = true
             @jobserver = [r, w]
             options[:parallel] ||= 1
           end