diff --git a/libzypp-17.28.2.tar.bz2 b/libzypp-17.28.2.tar.bz2
deleted file mode 100644
index 02278ee..0000000
--- a/libzypp-17.28.2.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:d756c387cd307a1cb944b553efdfbc7ac3907c705f6b5544a013984c3840ec02
-size 5354691
diff --git a/libzypp-17.28.3.tar.bz2 b/libzypp-17.28.3.tar.bz2
new file mode 100644
index 0000000..10c5bde
--- /dev/null
+++ b/libzypp-17.28.3.tar.bz2
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:d2f12a9d0588766f4028c231d15df7acef440a35ce5a5d7920a0eb252679df0e
+size 5355172
diff --git a/libzypp.changes b/libzypp.changes
index b8aeae4..7ab5e23 100644
--- a/libzypp.changes
+++ b/libzypp.changes
@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Fri Sep  3 14:34:19 CEST 2021 - ma@suse.de
+
+- CMake/spec: Add option to force SINGLE_RPMTRANS as default for
+  zypper (fixes #340)
+- Make sure singleTrans is zypper-only for now.
+- Do not double check signatures and keys (bsc#1190059)
+- version 17.28.3 (22)
+
 -------------------------------------------------------------------
 Tue Aug 31 10:49:51 CEST 2021 - ma@suse.de
 
diff --git a/libzypp.spec b/libzypp.spec
index 09b6082..b88d4f3 100644
--- a/libzypp.spec
+++ b/libzypp.spec
@@ -39,8 +39,11 @@
 %bcond_with sigc_block_workaround
 %endif
 
+# Distros using just zypper may want to enable this as default earlier
+%bcond_with enable_preview_single_rpmtrans_as_default_for_zypper
+
 Name:           libzypp
-Version:        17.28.2
+Version:        17.28.3
 Release:        0
 License:        GPL-2.0-or-later
 URL:            https://github.com/openSUSE/libzypp
@@ -269,6 +272,7 @@ cmake -DCMAKE_INSTALL_PREFIX=%{_prefix} \
       %{?with_zstd:-DENABLE_ZSTD_COMPRESSION=1} \
       %{?with_sigc_block_workaround:-DENABLE_SIGC_BLOCK_WORKAROUND=1} \
       %{!?with_mediabackend_tests:-DDISABLE_MEDIABACKEND_TESTS=1} \
+      %{?with enable_preview_single_rpmtrans_as_default_for_zypper:-DENABLE_PREVIEW_SINGLE_RPMTRANS_AS_DEFAULT_FOR_ZYPPER=1} \
       ${EXTRA_CMAKE_OPTIONS} \
       ..
 make %{?_smp_mflags} VERBOSE=1