diff -pruN 1:20250921-1/debian/changelog 1:20250921-1ubuntu1/debian/changelog
--- 1:20250921-1/debian/changelog	2025-09-21 08:59:17.000000000 +0000
+++ 1:20250921-1ubuntu1/debian/changelog	2025-09-21 11:47:03.000000000 +0000
@@ -1,3 +1,9 @@
+gcc-snapshot (1:20250921-1ubuntu1) questing; urgency=medium
+
+  * Snapshot, taken from the trunk (20250921).
+
+ -- Matthias Klose <doko@ubuntu.com>  Sun, 21 Sep 2025 13:47:03 +0200
+
 gcc-snapshot (1:20250921-1) unstable; urgency=medium
 
   * Snapshot, taken from the trunk (20250921).
diff -pruN 1:20250921-1/debian/control 1:20250921-1ubuntu1/debian/control
--- 1:20250921-1/debian/control	2025-09-21 08:59:11.000000000 +0000
+++ 1:20250921-1ubuntu1/debian/control	2025-09-21 11:47:03.000000000 +0000
@@ -1,11 +1,12 @@
 Source: gcc-snapshot
 Section: devel
 Priority: optional
-Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
+Maintainer: Ubuntu Core developers <ubuntu-devel-discuss@lists.ubuntu.com>
+XSBC-Original-Maintainer: Debian GCC Maintainers <debian-gcc@lists.debian.org>
 Uploaders: Matthias Klose <doko@debian.org>
 Standards-Version: 4.7.2
-Build-Depends: debhelper (>= 11), dpkg-dev (>= 1.17.14), g++-multilib [amd64 i386 mips mips64 mips64el mips64r6 mips64r6el mipsel mipsn32 mipsn32el mipsn32r6 mipsn32r6el mipsr6 mipsr6el powerpc ppc64 s390 s390x sparc sparc64 x32] <!cross>,
-  libc6.1-dev (>= 2.23-1~) [alpha ia64] | libc0.3-dev (>= 2.23-1~) [hurd-amd64 hurd-i386] | libc6-dev (>= 2.23-1~), libc6-dev-amd64 [i386 x32], libc6-dev-sparc64 [sparc], libc6-dev-sparc [sparc64], libc6-dev-s390 [s390x], libc6-dev-s390x [s390], libc6-dev-i386 [amd64 x32], libc6-dev-powerpc [ppc64], libc6-dev-ppc64 [powerpc], lib32gcc-s1 [amd64 ppc64 mipsn32 mipsn32el mips64 mips64el mipsn32r6 mipsn32r6el mips64r6 mips64r6el s390x sparc64 x32], libn32gcc-s1 [mips mipsel mips64 mips64el mipsr6 mipsr6el mips64r6 mips64r6el], lib64gcc-s1 [i386 mips mipsel mipsn32 mipsn32el mipsr6 mipsr6el mipsn32r6 mipsn32r6el powerpc sparc s390 x32], libc6-dev-mips64 [mips mipsel mipsn32 mipsn32el mipsr6 mipsr6el mipsn32r6 mipsn32r6el], libc6-dev-mipsn32 [mips mipsel mips64 mips64el mipsr6 mipsr6el mips64r6 mips64r6el], libc6-dev-mips32 [mipsn32 mipsn32el mips64 mips64el mipsn32r6 mipsn32r6el mips64r6 mips64r6el], libc6-dev-x32 [amd64 i386], libx32gcc-s1 [amd64 i386], libc6.1-dbg [alpha ia64] | libc0.3-dbg [hurd-amd64 hurd-i386] | libc6-dbg,
+Build-Depends: debhelper (>= 11), dpkg-dev (>= 1.17.14), g++-multilib [amd64 i386 mips mips64 mips64el mips64r6 mips64r6el mipsel mipsn32 mipsn32el mipsn32r6 mipsn32r6el mipsr6 mipsr6el powerpc ppc64 s390 sparc sparc64 x32] <!cross>,
+  libc6.1-dev (>= 2.13-0ubuntu6) [alpha ia64] | libc0.3-dev (>= 2.13-0ubuntu6) [hurd-amd64 hurd-i386] | libc6-dev (>= 2.13-0ubuntu6), libc6-dev-amd64 [i386 x32], libc6-dev-sparc64 [sparc], libc6-dev-sparc [sparc64], libc6-dev-s390x [s390], libc6-dev-i386 [amd64 x32], libc6-dev-powerpc [ppc64], libc6-dev-ppc64 [powerpc], lib32gcc-s1 [amd64 ppc64 mipsn32 mipsn32el mips64 mips64el mipsn32r6 mipsn32r6el mips64r6 mips64r6el sparc64 x32], libn32gcc-s1 [mips mipsel mips64 mips64el mipsr6 mipsr6el mips64r6 mips64r6el], lib64gcc-s1 [i386 mips mipsel mipsn32 mipsn32el mipsr6 mipsr6el mipsn32r6 mipsn32r6el powerpc sparc s390 x32], libc6-dev-mips64 [mips mipsel mipsn32 mipsn32el mipsr6 mipsr6el mipsn32r6 mipsn32r6el], libc6-dev-mipsn32 [mips mipsel mips64 mips64el mipsr6 mipsr6el mips64r6 mips64r6el], libc6-dev-mips32 [mipsn32 mipsn32el mips64 mips64el mipsn32r6 mipsn32r6el mips64r6 mips64r6el], libc6-dev-x32 [amd64 i386], libx32gcc-s1 [amd64 i386], libc6.1-dbg [alpha ia64] | libc0.3-dbg [hurd-amd64 hurd-i386] | libc6-dbg,
   linux-libc-dev [m68k],
   m4, libtool, autoconf2.69,
   dwz, libunwind8-dev [ia64], libatomic-ops-dev [ia64],
@@ -15,9 +16,9 @@ Build-Depends: debhelper (>= 11), dpkg-d
   gperf, bison, flex,
   gettext, nvptx-tools [amd64 arm64 ppc64el], amdgcn-tools-19 [amd64],
   texinfo, locales-all, sharutils,
-  procps, gnat-14:native [!arc !ia64 !sh3 !sh3eb !sh4eb], g++-14:native, netbase, gdc-14:native [!alpha !arc !ia64 !m68k !sh4 !s390 !hurd-amd64 !hurd-i386], python3:any, cargo [!alpha !hppa !ia64 !m68k !sh4 !x32 !hurd-amd64 !hurd-i386],
-  libisl-dev (>= 0.20), libmpc-dev (>= 1.0), libmpfr-dev (>= 3.0.0-9~), libgmp-dev (>= 2:5.0.1~), lib32z1-dev [amd64], lib64z1-dev [i386], unzip <!nocheck>,
-  dejagnu  [!alpha !hurd-amd64 !hurd-i386] <!nocheck>, git  [!alpha !hurd-amd64 !hurd-i386] <!nocheck>, coreutils, chrpath, lsb-release, quilt, time,
+  procps, gnat-15:native [!arc !ia64 !sh3 !sh3eb !sh4eb], g++-15:native, netbase, gdc-15:native [!alpha !arc !ia64 !m68k !sh4 !s390 !hurd-amd64 !hurd-i386], python3:any, cargo [!alpha !hppa !ia64 !m68k !sh4 !x32 !hurd-amd64 !hurd-i386],
+  libisl-dev (>= 0.20), libmpc-dev (>= 1.0), libmpfr-dev (>= 3.0.0-9~), libgmp-dev (>= 2:5.0.1~), lib32z1-dev [amd64], lib64z1-dev [i386], libx32z1-dev [amd64 i386], unzip <!nocheck>,
+  dejagnu  [!hurd-amd64 !hurd-i386] <!nocheck>, git  [!hurd-amd64 !hurd-i386] <!nocheck>, coreutils, chrpath, lsb-release, quilt, time,
   pkgconf, libgc-dev,
   g++-16-for-host <cross>, gobjc-16-for-host [!avr] <cross>, gfortran-16-for-host <cross>, gdc-16-for-host [!alpha !arc !ia64 !m68k !sh4 !s390 !hurd-amd64 !hurd-i386] <cross>, gccgo-16-for-host [!arc !avr !hppa !loong64 !m68k !sh4] <cross>, gnat-16-for-host [!arc !ia64 !sh3 !sh3eb !sh4eb] <cross>, gm2-16-for-host [!powerpc !ppc64 !sh4] <cross>, gcobol-16-for-host [!arc !hppa !m68k !mips !mipsel !powerpc !sh4 !sparc !x32 !i386 !hurd-i386 !arm !armel !armhf !hurd-amd64 !hurd-i386] <cross>, ga68-16-for-host <cross>,
 Build-Depends-Indep: doxygen <!nodoc>, graphviz <!nodoc>, ghostscript <!nodoc>, texlive-latex-base <!nodoc>, xsltproc <!nodoc>, libxml2-utils <!nodoc>, docbook-xsl-ns <!nodoc>,
diff -pruN 1:20250921-1/debian/rules.parameters 1:20250921-1ubuntu1/debian/rules.parameters
--- 1:20250921-1/debian/rules.parameters	2025-09-21 08:59:17.000000000 +0000
+++ 1:20250921-1ubuntu1/debian/rules.parameters	2025-09-21 11:47:03.000000000 +0000
@@ -2,14 +2,14 @@
 GCC_VERSION	:= 16.0.0
 NEXT_GCC_VERSION	:= 16.0.1
 BASE_VERSION	:= 16
-SOURCE_VERSION	:= 1:20250921-1
-DEB_VERSION	:= 20250921-1
-DEB_EVERSION	:= 1:20250921-1
-DEB_GDC_VERSION	:= 20250921-1
+SOURCE_VERSION	:= 1:20250921-1ubuntu1
+DEB_VERSION	:= 20250921-1ubuntu1
+DEB_EVERSION	:= 1:20250921-1ubuntu1
+DEB_GDC_VERSION	:= 20250921-1ubuntu1
 DEB_SOVERSION	:= 5
 DEB_SOEVERSION	:= 1:5
 DEB_LIBGCC_SOVERSION	:= 
-DEB_LIBGCC_VERSION	:= 20250921-1
+DEB_LIBGCC_VERSION	:= 20250921-1ubuntu1
 DEB_STDCXX_SOVERSION	:= 5
 DEB_GOMP_SOVERSION	:= 5
 GCC_SONAME	:= 1
