Mention --randseed in option list
diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 594c58f..1649865 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -34,6 +34,7 @@
Selecting tests
-r/--random -- randomize test execution order (see below)
+ --randseed -- pass a random seed to reproduce a previous random run
-f/--fromfile -- read names of tests to run from a file (see below)
-x/--exclude -- arguments are tests to *exclude*
-s/--single -- single step through a set of tests (see below)