diff --git a/coregrind/m_syswrap/syswrap-arm64-linux.c b/coregrind/m_syswrap/syswrap-arm64-linux.c
index 1be6629..f8b5b7c 100644
--- a/coregrind/m_syswrap/syswrap-arm64-linux.c
+++ b/coregrind/m_syswrap/syswrap-arm64-linux.c
@@ -868,6 +868,7 @@ static SyscallTableEntry syscall_main_table[] = {
    LINXY(__NR_recvmmsg,          sys_recvmmsg),          // 243
 
    GENXY(__NR_wait4,             sys_wait4),             // 260
+   LINXY(__NR_prlimit64,         sys_prlimit64),         // 261
 
    LINXY(__NR_name_to_handle_at, sys_name_to_handle_at), // 264
    LINXY(__NR_open_by_handle_at, sys_open_by_handle_at), // 265
diff --git a/coregrind/m_syswrap/syswrap-ppc64-linux.c b/coregrind/m_syswrap/syswrap-ppc64-linux.c
index f90140d..ce5cbbb 100644
--- a/coregrind/m_syswrap/syswrap-ppc64-linux.c
+++ b/coregrind/m_syswrap/syswrap-ppc64-linux.c
@@ -905,6 +905,7 @@ static SyscallTableEntry syscall_table[] = {
    LINX_(__NR_pwritev,           sys_pwritev),          // 321
    LINXY(__NR_rt_tgsigqueueinfo, sys_rt_tgsigqueueinfo),// 322
 
+   LINXY(__NR_prlimit64,         sys_prlimit64),        // 325
    LINXY(__NR_socket,            sys_socket),           // 326
    LINX_(__NR_bind,              sys_bind),             // 327
    LINX_(__NR_connect,           sys_connect),          // 328