diff -Nru libseccomp-2.4.3/debian/changelog libseccomp-2.4.3/debian/changelog
--- libseccomp-2.4.3/debian/changelog	2020-04-05 01:40:11.000000000 +1030
+++ libseccomp-2.4.3/debian/changelog	2020-05-12 13:21:14.000000000 +0930
@@ -1,3 +1,11 @@
+libseccomp (2.4.3-1ubuntu2) groovy; urgency=medium
+
+  * Add missing syscalls for aarch64 (LP: #1877633)
+    - fix-aarch64-syscalls.patch: Backport of pending PR #235 from
+      upstream
+
+ -- Alex Murray <alex.murray@canonical.com>  Tue, 12 May 2020 13:21:14 +0930
+
 libseccomp (2.4.3-1ubuntu1) focal; urgency=medium
 
   * Merge with Debian; remaining changes:
diff -Nru libseccomp-2.4.3/debian/patches/fix-aarch64-syscalls.patch libseccomp-2.4.3/debian/patches/fix-aarch64-syscalls.patch
--- libseccomp-2.4.3/debian/patches/fix-aarch64-syscalls.patch	1970-01-01 09:30:00.000000000 +0930
+++ libseccomp-2.4.3/debian/patches/fix-aarch64-syscalls.patch	2020-05-12 13:21:14.000000000 +0930
@@ -0,0 +1,32 @@
+Description: Fix missing aarch64 syscalls
+Origin: Backport of https://github.com/seccomp/libseccomp/pull/235
+Author: Alex Murray <alex.murray@canonical.com>
+--- a/src/arch-aarch64-syscalls.c
++++ b/src/arch-aarch64-syscalls.c
+@@ -68,7 +68,7 @@ const struct arch_syscall_def aarch64_sy
+ 	{ "clock_settime", 112 },
+ 	{ "clock_settime64", __PNR_clock_settime64 },
+ 	{ "clone", 220 },
+-	{ "clone3", __PNR_clone3 },
++	{ "clone3", 435 },
+ 	{ "close", 57 },
+ 	{ "connect", 203 },
+ 	{ "copy_file_range", 285 },
+@@ -159,7 +159,7 @@ const struct arch_syscall_def aarch64_sy
+ 	{ "getresgid32", __PNR_getresgid32 },
+ 	{ "getresuid", 148 },
+ 	{ "getresuid32", __PNR_getresuid32 },
+-	{ "getrlimit", __PNR_getrlimit },
++	{ "getrlimit", 163 },
+ 	{ "getrusage", 165 },
+ 	{ "getsid", 156 },
+ 	{ "getsockname", 204 },
+@@ -391,7 +391,7 @@ const struct arch_syscall_def aarch64_sy
+ 	{ "setresuid32", __PNR_setresuid32 },
+ 	{ "setreuid", 145 },
+ 	{ "setreuid32", __PNR_setreuid32 },
+-	{ "setrlimit", __PNR_setrlimit },
++	{ "setrlimit", 164 },
+ 	{ "setsid", 157 },
+ 	{ "setsockopt", 208 },
+ 	{ "settimeofday", 170 },
diff -Nru libseccomp-2.4.3/debian/patches/series libseccomp-2.4.3/debian/patches/series
--- libseccomp-2.4.3/debian/patches/series	2020-04-05 01:40:11.000000000 +1030
+++ libseccomp-2.4.3/debian/patches/series	2020-05-12 13:20:04.000000000 +0930
@@ -1,2 +1,3 @@
 cython3.patch
 riscv64_support.patch
+fix-aarch64-syscalls.patch