diff -Nru bitcoin-0.21.0.knots20210130/debian/changelog bitcoin-0.21.0.knots20210130/debian/changelog
--- bitcoin-0.21.0.knots20210130/debian/changelog	2021-02-01 00:22:19.000000000 +0000
+++ bitcoin-0.21.0.knots20210130/debian/changelog	2021-02-01 01:14:35.000000000 +0000
@@ -1,8 +1,8 @@
-bitcoin (0.21.0.knots20210130-xenial2) xenial; urgency=medium
+bitcoin (0.21.0.knots20210130-xenial3) xenial; urgency=medium
 
   * PPA
 
- -- Luke Dashjr <luke-jr+PPA@utopios.org>  Mon, 01 Feb 2021 00:22:19 +0000
+ -- Luke Dashjr <luke-jr+PPA@utopios.org>  Mon, 01 Feb 2021 01:14:35 +0000
 
 bitcoin (0.16.2-trusty4) trusty; urgency=medium
 
diff -Nru bitcoin-0.21.0.knots20210130/debian/patches/3001_include_atomic.patch bitcoin-0.21.0.knots20210130/debian/patches/3001_include_atomic.patch
--- bitcoin-0.21.0.knots20210130/debian/patches/3001_include_atomic.patch	1970-01-01 00:00:00.000000000 +0000
+++ bitcoin-0.21.0.knots20210130/debian/patches/3001_include_atomic.patch	2021-02-01 01:14:18.000000000 +0000
@@ -0,0 +1,13 @@
+diff --git a/src/qt/notificator.h b/src/qt/notificator.h
+index dc2a24ef52e..f4ea55770f2 100644
+--- a/src/qt/notificator.h
++++ b/src/qt/notificator.h
+@@ -13,6 +13,8 @@
+ #include <QObject>
+ #include <QThread>
+ 
++#include <atomic>
++
+ QT_BEGIN_NAMESPACE
+ class QSystemTrayIcon;
+ 
diff -Nru bitcoin-0.21.0.knots20210130/debian/patches/series bitcoin-0.21.0.knots20210130/debian/patches/series
--- bitcoin-0.21.0.knots20210130/debian/patches/series	2021-02-01 00:22:04.000000000 +0000
+++ bitcoin-0.21.0.knots20210130/debian/patches/series	2021-02-01 01:14:18.000000000 +0000
@@ -1 +1,2 @@
 3000_old_qt.patch
+3001_include_atomic.patch