Issue #20743: Fix a reference leak in test_tcl.
diff --git a/Misc/NEWS b/Misc/NEWS
index 2593500..26c96c2 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -249,6 +249,8 @@
 Tests
 -----
 
+- Issue #20743: Fix a reference leak in test_tcl.
+
 - Issue #20510: Rewrote test_exit in test_sys to match existing comments,
   use modern unittest features, and use helpers from test.script_helper
   instead of using subprocess directly.  Initial patch by Gareth Rees.