diff --git a/ChangeLog b/ChangeLog
index 5b83659c..849ab277 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2020-09-18  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
+
+	Submitted by Sven Schwermer:
+	patch #9966: Add JTAGICE3 in UPDI mode
+	* avrdude.conf (jtag3updi): New entry.
+
 2020-09-18  Joerg Wunsch <j.gnu@uriah.heep.sax.de>
 
 	Submitted by Joel Ray Holveck
diff --git a/NEWS b/NEWS
index 22ed6aba..25fdf1df 100644
--- a/NEWS
+++ b/NEWS
@@ -36,6 +36,7 @@ Current:
     - ehajo-isp (commercial version of USBtiny)
     - XplainedPro in UPDI mode
     - XplainedMini in UPDI mode
+    - JTAGICE3 in UPDI mode
     - Atmel Powerdebugger in all modes (JTAG, PDI, UPDI, debugWIRE, ISP)
 
   * Bugfixes:
@@ -73,6 +74,7 @@ Current:
     patch #9820: Fix some out-of-bounds/uninitialized issues
     patch #9818: correct typos in SVN rev 1429
     patch #9732: usbtiny_paged_load overflows buffer e.g. when reading EEPROM
+    patch #9966: Add JTAGICE3 in UPDI mode
 
   * Internals:
     - New avrdude.conf keyword "family_id", used to verify SIB attributes
diff --git a/avrdude.conf.in b/avrdude.conf.in
index edeb1ad7..dd138cd9 100644
--- a/avrdude.conf.in
+++ b/avrdude.conf.in
@@ -1085,6 +1085,14 @@ programmer
   usbpid = 0x2110, 0x2140;
 ;
 
+programmer
+  id    = "jtag3updi";
+  desc  = "Atmel AVR JTAGICE3 in UPDI mode";
+  type  = "jtagice3_updi";
+  connection_type = usb;
+  usbpid = 0x2110, 0x2140;
+;
+
 programmer
   id    = "jtag3dw";
   desc  = "Atmel AVR JTAGICE3 in debugWIRE mode";