diff --git a/0001-build-fixes.patch b/0001-build-fixes.patch
index bc502a7..ada60d5 100644
--- a/0001-build-fixes.patch
+++ b/0001-build-fixes.patch
@@ -15,27 +15,27 @@ Multimedia Transfer Protocol library.
  libosmo-sccp.pc.in     |    2 +-
  src/Makefile.am        |   20 +++++++++++++++-----
  tests/m2ua/Makefile.am |    2 +-
- tests/sccp/Makefile.am |    6 +++---
- tests/ss7/Makefile.am  |    2 --
- tests/xua/Makefile.am  |    6 ++----
- 8 files changed, 24 insertions(+), 17 deletions(-)
+ tests/sccp/Makefile.am |    7 ++++---
+ tests/ss7/Makefile.am  |    2 +-
+ tests/xua/Makefile.am  |    7 ++++---
+ 8 files changed, 28 insertions(+), 15 deletions(-)
 
-Index: libosmo-sccp-1.7.0/configure.ac
+Index: libosmo-sccp-1.8.1/configure.ac
 ===================================================================
---- libosmo-sccp-1.7.0.orig/configure.ac
-+++ libosmo-sccp-1.7.0/configure.ac
-@@ -36,6 +36,7 @@ if test "x$PKG_CONFIG_INSTALLED" = "xno"
- fi
- PKG_PROG_PKG_CONFIG([0.20])
- 
+--- libosmo-sccp-1.8.1.orig/configure.ac
++++ libosmo-sccp-1.8.1/configure.ac
+@@ -51,6 +51,7 @@ AC_SEARCH_LIBS([sctp_recvmsg], [sctp], [
+ 	], [
+ 	AC_MSG_ERROR([sctp_recvmsg not found in searched libs])])
+ LIBS=$old_LIBS
 +PKG_CHECK_MODULES([TALLOC], [talloc])
- PKG_CHECK_MODULES(LIBOSMOCORE, libosmocore >= 1.8.0)
- PKG_CHECK_MODULES(LIBOSMOVTY, libosmovty >= 1.8.0)
- PKG_CHECK_MODULES(LIBOSMOGSM, libosmogsm >= 1.8.0)
-Index: libosmo-sccp-1.7.0/libosmo-mtp.pc.in
+ 
+ AC_ARG_ENABLE(sanitize,
+ 	[AS_HELP_STRING(
+Index: libosmo-sccp-1.8.1/libosmo-mtp.pc.in
 ===================================================================
---- libosmo-sccp-1.7.0.orig/libosmo-mtp.pc.in
-+++ libosmo-sccp-1.7.0/libosmo-mtp.pc.in
+--- libosmo-sccp-1.8.1.orig/libosmo-mtp.pc.in
++++ libosmo-sccp-1.8.1/libosmo-mtp.pc.in
 @@ -6,5 +6,5 @@ includedir=@includedir@
  Name: Osmo MTP Lib
  Description: Osmo MTP Lib
@@ -43,10 +43,10 @@ Index: libosmo-sccp-1.7.0/libosmo-mtp.pc.in
 -Libs: -L${libdir} -lmtp
 +Libs: -L${libdir} -losmo-mtp
  Cflags: -I${includedir}/
-Index: libosmo-sccp-1.7.0/libosmo-sccp.pc.in
+Index: libosmo-sccp-1.8.1/libosmo-sccp.pc.in
 ===================================================================
---- libosmo-sccp-1.7.0.orig/libosmo-sccp.pc.in
-+++ libosmo-sccp-1.7.0/libosmo-sccp.pc.in
+--- libosmo-sccp-1.8.1.orig/libosmo-sccp.pc.in
++++ libosmo-sccp-1.8.1/libosmo-sccp.pc.in
 @@ -6,5 +6,5 @@ includedir=@includedir@
  Name: OpenBSC SCCP Lib
  Description: OpenBSC SCCP Lib
@@ -54,10 +54,10 @@ Index: libosmo-sccp-1.7.0/libosmo-sccp.pc.in
 -Libs: -L${libdir} -lsccp
 +Libs: -L${libdir} -losmo-sccp
  Cflags: -I${includedir}/
-Index: libosmo-sccp-1.7.0/src/Makefile.am
+Index: libosmo-sccp-1.8.1/src/Makefile.am
 ===================================================================
---- libosmo-sccp-1.7.0.orig/src/Makefile.am
-+++ libosmo-sccp-1.7.0/src/Makefile.am
+--- libosmo-sccp-1.8.1.orig/src/Makefile.am
++++ libosmo-sccp-1.8.1/src/Makefile.am
 @@ -7,15 +7,21 @@ noinst_HEADERS = sccp_internal.h ss7_int
  # Legacy static libs
  
@@ -85,7 +85,7 @@ Index: libosmo-sccp-1.7.0/src/Makefile.am
  
  
  # New shared lib
-@@ -36,3 +42,7 @@ libosmo_sigtran_la_SOURCES = sccp_sap.c
+@@ -37,3 +43,7 @@ libosmo_sigtran_la_SOURCES = sccp_sap.c
  libosmo_sigtran_la_LDFLAGS = -version-info $(LIBVERSION) -no-undefined -export-symbols-regex '^osmo_'
  libosmo_sigtran_la_LIBADD = $(LIBOSMOCORE_LIBS) $(LIBOSMOGSM_LIBS) $(LIBOSMOVTY_LIBS) \
  			    $(LIBOSMONETIF_LIBS) $(LIBSCTP_LIBS)
@@ -93,24 +93,26 @@ Index: libosmo-sccp-1.7.0/src/Makefile.am
 +noinst_LTLIBRARIES = libosmo-sigtran-internal.la
 +libosmo_sigtran_internal_la_SOURCES = $(libosmo_sigtran_la_SOURCES)
 +libosmo_sigtran_internal_la_LIBADD = $(libosmo_sigtran_la_LIBADD)
-Index: libosmo-sccp-1.7.0/tests/m2ua/Makefile.am
+Index: libosmo-sccp-1.8.1/tests/m2ua/Makefile.am
 ===================================================================
---- libosmo-sccp-1.7.0.orig/tests/m2ua/Makefile.am
-+++ libosmo-sccp-1.7.0/tests/m2ua/Makefile.am
-@@ -5,4 +5,4 @@ EXTRA_DIST = m2ua_test.ok
+--- libosmo-sccp-1.8.1.orig/tests/m2ua/Makefile.am
++++ libosmo-sccp-1.8.1/tests/m2ua/Makefile.am
+@@ -6,4 +6,4 @@ EXTRA_DIST = m2ua_test.ok
  
  check_PROGRAMS = m2ua_test
  m2ua_test_SOURCES = m2ua_test.c
 -m2ua_test_LDADD = $(top_builddir)/src/libxua.a $(LIBOSMOCORE_LIBS)
 +m2ua_test_LDADD = $(top_builddir)/src/libosmo-xua.la $(LIBOSMOCORE_LIBS) ${TALLOC_LIBS}
-Index: libosmo-sccp-1.7.0/tests/sccp/Makefile.am
+Index: libosmo-sccp-1.8.1/tests/sccp/Makefile.am
 ===================================================================
---- libosmo-sccp-1.7.0.orig/tests/sccp/Makefile.am
-+++ libosmo-sccp-1.7.0/tests/sccp/Makefile.am
-@@ -1,13 +1,13 @@
--AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
-+AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include ${TALLOC_CFLAGS}
- AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS)
+--- libosmo-sccp-1.8.1.orig/tests/sccp/Makefile.am
++++ libosmo-sccp-1.8.1/tests/sccp/Makefile.am
+@@ -1,14 +1,15 @@
+ AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
+-AM_CFLAGS=-Wall -ggdb3 $(LIBOSMOCORE_CFLAGS)
++AM_CFLAGS=-Wall -ggdb3
++AM_CPPFLAGS += $(LIBOSMOCORE_CFLAGS) ${TALLOC_CFLAGS}
+ AM_LDFLAGS = -no-install
  
  EXTRA_DIST = sccp_test.ok
  
@@ -124,29 +126,32 @@ Index: libosmo-sccp-1.7.0/tests/sccp/Makefile.am
 +	${TALLOC_LIBS} \
  	$(NULL)
  
-Index: libosmo-sccp-1.7.0/tests/ss7/Makefile.am
+Index: libosmo-sccp-1.8.1/tests/ss7/Makefile.am
 ===================================================================
---- libosmo-sccp-1.7.0.orig/tests/ss7/Makefile.am
-+++ libosmo-sccp-1.7.0/tests/ss7/Makefile.am
-@@ -1,7 +1,5 @@
- AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -Wall
+--- libosmo-sccp-1.8.1.orig/tests/ss7/Makefile.am
++++ libosmo-sccp-1.8.1/tests/ss7/Makefile.am
+@@ -1,7 +1,7 @@
+ AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
  AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
--
--AM_LDFLAGS = -static
+ 
+-AM_LDFLAGS = -static -no-install
++AM_LDFLAGS = -no-install
  LDADD = $(top_builddir)/src/libosmo-sigtran.la \
  	$(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMONETIF_LIBS) $(LIBSCTP_LIBS)
  
-Index: libosmo-sccp-1.7.0/tests/xua/Makefile.am
+Index: libosmo-sccp-1.8.1/tests/xua/Makefile.am
 ===================================================================
---- libosmo-sccp-1.7.0.orig/tests/xua/Makefile.am
-+++ libosmo-sccp-1.7.0/tests/xua/Makefile.am
-@@ -1,8 +1,6 @@
--AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -Wall
-+AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include -Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMONETIF_CFLAGS) $(LIBSCTP_CFLAGS)
- AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
--
--AM_LDFLAGS = -static
+--- libosmo-sccp-1.8.1.orig/tests/xua/Makefile.am
++++ libosmo-sccp-1.8.1/tests/xua/Makefile.am
+@@ -1,8 +1,9 @@
+ AM_CPPFLAGS = $(all_includes) -I$(top_srcdir)/include
+-AM_CFLAGS=-Wall $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS)
++AM_CFLAGS=-Wall
++AM_CPPFLAGS += $(LIBOSMOCORE_CFLAGS) $(LIBOSMOVTY_CFLAGS) $(LIBOSMONETIF_CFLAGS) $(LIBSCTP_CFLAGS)
+ 
+-AM_LDFLAGS = -static -no-install
 -LDADD = $(top_builddir)/src/libosmo-sigtran.la \
++AM_LDFLAGS = -no-install
 +LDADD = $(top_builddir)/src/libosmo-xua.la $(top_builddir)/src/libosmo-sigtran-internal.la \
  	$(LIBOSMOCORE_LIBS) $(LIBOSMOVTY_LIBS) $(LIBOSMONETIF_LIBS) $(LIBSCTP_LIBS)
  
diff --git a/1.7.0.tar.gz b/1.7.0.tar.gz
deleted file mode 100644
index 7c94f1d..0000000
--- a/1.7.0.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:75d65282f5eda182feee5b453c9b9840d4521624eeb3e6e44f23b6986f52273c
-size 298080
diff --git a/1.8.1.tar.gz b/1.8.1.tar.gz
new file mode 100644
index 0000000..fe4ad3a
--- /dev/null
+++ b/1.8.1.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:985cad5f79c797ab14de67ee6162971e06341508f6ddf9ad3309b54a8041e9a5
+size 309486
diff --git a/harden_osmo-stp.service.patch b/harden_osmo-stp.service.patch
index 33bb83b..23495e6 100644
--- a/harden_osmo-stp.service.patch
+++ b/harden_osmo-stp.service.patch
@@ -2,12 +2,12 @@
  contrib/systemd/osmo-stp.service |   13 +++++++++++++
  1 file changed, 13 insertions(+)
 
-Index: libosmo-sccp-1.7.0/contrib/systemd/osmo-stp.service
+Index: libosmo-sccp-1.8.1/contrib/systemd/osmo-stp.service
 ===================================================================
---- libosmo-sccp-1.7.0.orig/contrib/systemd/osmo-stp.service
-+++ libosmo-sccp-1.7.0/contrib/systemd/osmo-stp.service
-@@ -3,6 +3,19 @@ Description=Osmocom STP (Signal Transfer
- Documentation=https://osmocom.org/projects/osmo-stp/wiki
+--- libosmo-sccp-1.8.1.orig/contrib/systemd/osmo-stp.service
++++ libosmo-sccp-1.8.1/contrib/systemd/osmo-stp.service
+@@ -5,6 +5,19 @@ After=network-online.target
+ Wants=network-online.target
  
  [Service]
 +# added automatically, for details please see
diff --git a/libosmo-sccp.changes b/libosmo-sccp.changes
index 6b0655a..0ec8e5b 100644
--- a/libosmo-sccp.changes
+++ b/libosmo-sccp.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Nov  1 18:54:01 UTC 2023 - Jan Engelhardt <jengelh@inai.de>
+
+- Update to release 1.8.1
+  * SCCP: implement variable limit on Optional Data
+    (CR,CC,CREF,RLSD)
+  * Allow configuring per-ASP SCTP INIT parameters
+
 -------------------------------------------------------------------
 Thu May 18 11:31:13 UTC 2023 - Jan Engelhardt <jengelh@inai.de>
 
diff --git a/libosmo-sccp.spec b/libosmo-sccp.spec
index bea4baf..1863fcb 100644
--- a/libosmo-sccp.spec
+++ b/libosmo-sccp.spec
@@ -17,7 +17,7 @@
 
 
 Name:           libosmo-sccp
-Version:        1.7.0
+Version:        1.8.1
 Release:        0
 %define libversion %(echo "%version" | sed 's/\\./_/g')
 Summary:        Osmocom library for the A-bis interface between BTS and BSC
@@ -33,10 +33,10 @@ BuildRequires:  libtool >= 2
 BuildRequires:  lksctp-tools-devel
 BuildRequires:  pkg-config >= 0.20
 BuildRequires:  systemd-rpm-macros
-BuildRequires:  pkgconfig(libosmo-netif) >= 1.3.0
-BuildRequires:  pkgconfig(libosmocore) >= 1.8.0
-BuildRequires:  pkgconfig(libosmogsm) >= 1.8.0
-BuildRequires:  pkgconfig(libosmovty) >= 1.8.0
+BuildRequires:  pkgconfig(libosmo-netif) >= 1.4.0
+BuildRequires:  pkgconfig(libosmocore) >= 1.9.0
+BuildRequires:  pkgconfig(libosmogsm) >= 1.9.0
+BuildRequires:  pkgconfig(libosmovty) >= 1.9.0
 
 %description
 SCCP is a network layer protocol that provides extended routing, flow
@@ -96,19 +96,19 @@ in SS7 telecommunications networks.
 This subpackage contains the development files for the Osmocom SCCP
 library.
 
-%package -n libosmo-sigtran7
+%package -n libosmo-sigtran9
 Summary:        Osmocom SIGTRAN library
 License:        GPL-2.0-or-later
 Group:          System/Libraries
 
-%description -n libosmo-sigtran7
+%description -n libosmo-sigtran9
 Osmocom implementation of (parts of) SIGTRAN.
 
 %package -n libosmo-sigtran-devel
 Summary:        Development files for the Osmocom sigtran library
 License:        GPL-2.0-or-later
 Group:          Development/Libraries/C and C++
-Requires:       libosmo-sigtran7 = %version
+Requires:       libosmo-sigtran9 = %version
 
 %description -n libosmo-sigtran-devel
 Osmocom implementation of (parts of) SIGTRAN.
@@ -184,8 +184,8 @@ fi
 %postun -n libosmo-mtp-%libversion -p /sbin/ldconfig
 %post   -n libosmo-sccp-%libversion -p /sbin/ldconfig
 %postun -n libosmo-sccp-%libversion -p /sbin/ldconfig
-%post   -n libosmo-sigtran7 -p /sbin/ldconfig
-%postun -n libosmo-sigtran7 -p /sbin/ldconfig
+%post   -n libosmo-sigtran9 -p /sbin/ldconfig
+%postun -n libosmo-sigtran9 -p /sbin/ldconfig
 %post   -n libosmo-xua-%libversion -p /sbin/ldconfig
 %postun -n libosmo-xua-%libversion -p /sbin/ldconfig
 
@@ -221,8 +221,8 @@ fi
 %_libdir/libosmo-sccp.so
 %_libdir/pkgconfig/libosmo-sccp.pc
 
-%files -n libosmo-sigtran7
-%_libdir/libosmo-sigtran.so.7*
+%files -n libosmo-sigtran9
+%_libdir/libosmo-sigtran.so.*
 
 %files -n libosmo-sigtran-devel
 %dir %_includedir/%name/