diff --git a/Misc/ACKS b/Misc/ACKS
index 1c40bb338cb..81d4aa9cc8a 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -593,6 +593,7 @@ Meador Inge
 Peter Ingebretson
 Tony Ingraldi
 John Interrante
+Vladimir Iofik
 Bob Ippolito
 Roger Irwin
 Atsuo Ishimoto
@@ -618,6 +619,7 @@ Philip H. Jensen
 Philip Jenvey
 MunSic Jeong
 Chris Jerdonek
+Dmitry Jeremov
 Jim Jewett
 Pedro Diaz Jimenez
 Orjan Johansen
diff --git a/Misc/NEWS b/Misc/NEWS
index 65d9765360e..f086cc3f6e5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -46,6 +46,9 @@ Core and Builtins
 Library
 -------
 
+- Issue #9291: Do not attempt to re-encode mimetype data read from registry in
+  ANSI mode. Initial patches by Dmitry Jemerov & Vladimir Iofik.
+
 - Issue #21349: Passing a memoryview to _winreg.SetValueEx now correctly raises
   a TypeError where it previously crashed the interpreter. Patch by Brian Kearns