diff --git a/Lib/test/regrtest.py b/Lib/test/regrtest.py
index 38d7b25..871ae61 100755
--- a/Lib/test/regrtest.py
+++ b/Lib/test/regrtest.py
@@ -301,7 +301,7 @@
         opts, args = getopt.getopt(sys.argv[1:], 'hvqxsoS:rf:lu:t:TD:NLR:FdwWM:nj:Gm:',
             ['help', 'verbose', 'verbose2', 'verbose3', 'quiet',
              'exclude', 'single', 'slow', 'random', 'fromfile', 'findleaks',
-             'use=', 'threshold=', 'trace', 'coverdir=', 'nocoverdir',
+             'use=', 'threshold=', 'coverdir=', 'nocoverdir',
              'runleaks', 'huntrleaks=', 'memlimit=', 'randseed=',
              'multiprocess=', 'coverage', 'slaveargs=', 'forever', 'debug',
              'start=', 'nowindows', 'header', 'testdir=', 'timeout=', 'wait',
diff --git a/Misc/NEWS b/Misc/NEWS
index 2c4bec0..adb6e45 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -1848,6 +1848,8 @@
 Tests
 -----
 
+- Issue #13786: Remove unimplemented 'trace' long option from regrtest.py.
+
 - Issue #13725: Fix regrtest to recognize the documented -d flag.
   Patch by Erno Tukia.