diff -Nru gravit-0.5.1+dfsg/debian/changelog gravit-0.5.1+dfsg/debian/changelog
--- gravit-0.5.1+dfsg/debian/changelog	2020-05-01 08:35:04.000000000 +0000
+++ gravit-0.5.1+dfsg/debian/changelog	2022-11-05 16:27:59.000000000 +0000
@@ -1,3 +1,14 @@
+gravit (0.5.1+dfsg-6) unstable; urgency=medium
+
+  * Team Upload.
+  * Add patch to also link with GL (Closes: #1022284)
+  * Bump Standards-Version to 4.6.1 (no changes needed)
+  * Remove debhelper from B-D, do not keep both dh and dh-compat
+  * Bump debhelper compatibility level to 13
+  * Update copyright year
+
+ -- Nilesh Patra <nilesh@debian.org>  Sat, 05 Nov 2022 21:57:59 +0530
+
 gravit (0.5.1+dfsg-5) unstable; urgency=medium
 
   * Fix ftbfs with GCC-10 (Closes: #957303)
diff -Nru gravit-0.5.1+dfsg/debian/control gravit-0.5.1+dfsg/debian/control
--- gravit-0.5.1+dfsg/debian/control	2020-05-01 08:35:04.000000000 +0000
+++ gravit-0.5.1+dfsg/debian/control	2022-11-05 16:27:56.000000000 +0000
@@ -3,13 +3,12 @@
 Uploaders: Tomasz Buchert <tomasz@debian.org>
 Section: science
 Priority: optional
-Build-Depends: debhelper (>= 12),
-               debhelper-compat (= 12),
+Build-Depends: debhelper-compat (= 13),
                liblua5.1-0-dev,
                libsdl-image1.2-dev,
                libsdl-ttf2.0-dev,
                libsdl1.2-dev
-Standards-Version: 4.5.0
+Standards-Version: 4.6.1
 Vcs-Browser: https://salsa.debian.org/debian-astro-team/gravit
 Vcs-Git: https://salsa.debian.org/debian-astro-team/gravit.git
 Homepage: https://github.com/gak/gravit
diff -Nru gravit-0.5.1+dfsg/debian/copyright gravit-0.5.1+dfsg/debian/copyright
--- gravit-0.5.1+dfsg/debian/copyright	2020-05-01 08:35:04.000000000 +0000
+++ gravit-0.5.1+dfsg/debian/copyright	2022-11-05 16:27:56.000000000 +0000
@@ -40,7 +40,7 @@
  for ore information.
 
 Files: debian/*
-Copyright: 2014-2015 Tomasz Buchert <tomasz@debian.org>
+Copyright: 2014-2022 Tomasz Buchert <tomasz@debian.org>
 License: GPL-2+
 
 
diff -Nru gravit-0.5.1+dfsg/debian/patches/link-with-gl.patch gravit-0.5.1+dfsg/debian/patches/link-with-gl.patch
--- gravit-0.5.1+dfsg/debian/patches/link-with-gl.patch	1970-01-01 00:00:00.000000000 +0000
+++ gravit-0.5.1+dfsg/debian/patches/link-with-gl.patch	2022-11-05 16:07:46.000000000 +0000
@@ -0,0 +1,20 @@
+Description: GLU does not vendor -lGL flag from pkg-config anymore requires
+ so use GL_LIBS and GL_CFLAGS as well
+Author: Nilesh Patra <nilesh@debian.org>
+Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1022284
+Last-Update: 2022-11-05
+--- a/configure.in
++++ b/configure.in
+@@ -183,9 +183,9 @@
+ if test x"$have_gl" = x"yes" -a  x"$have_glu" = x"yes" ; then
+    PKG_CHECK_MODULES(GL, [gl])
+    PKG_CHECK_MODULES(GLU, [glu])
+-   #GLU requires GL, so it's enough to use GLU_CFLAGS and GLU_LIBS
+-   CFLAGS="$CFLAGS $GLU_CFLAGS"
+-   LIBS="$LIBS $GLU_LIBS"
++   #GLU does not vendor -lGL flag from pkg-config anymore requires so use GL_LIBS and GL_CFLAGS as well
++   CFLAGS="$CFLAGS $GLU_CFLAGS $GL_CFLAGS"
++   LIBS="$LIBS $GLU_LIBS $GL_LIBS"
+ else
+ dnl Check for OpenGL - borrowed from SDL_ttf
+    case "$host" in
diff -Nru gravit-0.5.1+dfsg/debian/patches/series gravit-0.5.1+dfsg/debian/patches/series
--- gravit-0.5.1+dfsg/debian/patches/series	2020-05-01 08:35:04.000000000 +0000
+++ gravit-0.5.1+dfsg/debian/patches/series	2022-11-05 16:13:28.000000000 +0000
@@ -1,3 +1,4 @@
 fix-ftbfs-non-x86.patch
 0002-make-HAVE_SSE-fully-configurable.patch
 0003-fix-gcc10-fno-common-build-issue.patch
+link-with-gl.patch