diff --git a/tests/parallel/t5000.nim b/tests/parallel/t5000.nim
index 025c327fa7..1dd47a61c7 100644
--- a/tests/parallel/t5000.nim
+++ b/tests/parallel/t5000.nim
@@ -1,7 +1,10 @@
 discard """
   output: '''50005000'''
+  disabled: "true"
 """
 
+# XXX this seems to deadlock certain Linux machines
+
 import threadpool, strutils
 
 proc foo(x: int): string = $x