diff --git a/collects/mzlib/thread.ss b/collects/mzlib/thread.ss
new file mode 100644
index 0000000..5c7f93e
--- /dev/null
+++ b/collects/mzlib/thread.ss
@@ -0,0 +1,7 @@
+
+
+(require-library "threadu.ss")
+
+(invoke-open-unit/sig mzlib:thread@ #f)
+
+