diff -Nru qttranslations-opensource-src-5.15.2/debian/changelog qttranslations-opensource-src-5.15.2/debian/changelog
--- qttranslations-opensource-src-5.15.2/debian/changelog	2020-11-23 18:28:30.000000000 +0000
+++ qttranslations-opensource-src-5.15.2/debian/changelog	2021-01-26 13:33:26.000000000 +0000
@@ -1,3 +1,11 @@
+qttranslations-opensource-src (5.15.2-2) unstable; urgency=medium
+
+  * Update debian/watch: use format 4, and track only 5.15.x releases.
+  * Bump Standards-Version to 4.5.1, no changes needed.
+  * Upload to unstable.
+
+ -- Dmitry Shachnev <mitya57@debian.org>  Tue, 26 Jan 2021 16:33:26 +0300
+
 qttranslations-opensource-src (5.15.2-1) experimental; urgency=medium
 
   * New upstream release.
diff -Nru qttranslations-opensource-src-5.15.2/debian/control qttranslations-opensource-src-5.15.2/debian/control
--- qttranslations-opensource-src-5.15.2/debian/control	2020-11-23 18:28:30.000000000 +0000
+++ qttranslations-opensource-src-5.15.2/debian/control	2021-01-26 13:33:26.000000000 +0000
@@ -13,7 +13,7 @@
 Build-Depends: debhelper-compat (= 13),
                qt5-qmake (>= 5.15.2+dfsg~),
                qttools5-dev-tools (>= 5.15.2~)
-Standards-Version: 4.5.0
+Standards-Version: 4.5.1
 Rules-Requires-Root: no
 Homepage: http://qt-project.org/
 Vcs-Git: https://salsa.debian.org/qt-kde-team/qt/qttranslations.git
diff -Nru qttranslations-opensource-src-5.15.2/debian/watch qttranslations-opensource-src-5.15.2/debian/watch
--- qttranslations-opensource-src-5.15.2/debian/watch	2020-11-23 18:28:30.000000000 +0000
+++ qttranslations-opensource-src-5.15.2/debian/watch	2021-01-26 13:33:26.000000000 +0000
@@ -1,2 +1,2 @@
-version=3
-https://download.qt.io/official_releases/qt/([\d\.]*)/([\d\.]*)/submodules/qttranslations-everywhere-src-([^-]*)\.tar.xz
+version=4
+https://download.qt.io/archive/qt/5.15/([\d\.]*)/submodules/qttranslations-everywhere-src-([^-]*)\.tar\.xz