diff --git a/Misc/ACKS b/Misc/ACKS
index 7096d72..45ab6a4 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -661,6 +661,7 @@
 Michele Orrù
 Oleg Oshmyan
 Denis S. Otkidach
+Peter Otten
 Michael Otteneder
 R. M. Oudkerk
 Russel Owen
diff --git a/Misc/NEWS b/Misc/NEWS
index c12bda2..ff1a0ad 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -25,6 +25,9 @@
 Library
 -------
 
+- Issue #12888: Fix a bug in HTMLParser.unescape that prevented it to escape
+  more than 128 entities.  Patch by Peter Otten.
+
 - Issue #12878: Expose a __dict__ attribute on io.IOBase and its subclasses.
 
 - Issue #12636: IDLE reads the coding cookie when executing a Python script.