1 files changed, 3 insertions, 0 deletions
diff --git a/Misc/NEWS b/Misc/NEWS
index 66ecff1..6730e9f 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -24,6 +24,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #16840: Tkinter now supports 64-bit integers added in Tcl 8.4 and
+  arbitrary precision integers added in Tcl 8.5.
+
 - Issue #23834: Fix socket.sendto(), use the C Py_ssize_t type to store the
   result of sendto() instead of the C int type.