diff --git a/kernel-src/arch/x86-64/syscall.asm b/kernel-src/arch/x86-64/syscall.asm
index 0bc18b5f..ac80c6ce 100644
--- a/kernel-src/arch/x86-64/syscall.asm
+++ b/kernel-src/arch/x86-64/syscall.asm
@@ -88,6 +88,7 @@ extern syscall_seteuid
 extern syscall_setgid
 extern syscall_setegid
 extern syscall_sigsuspend
+extern syscall_sigtimedwait
 syscalltab:
 dq syscall_print
 dq syscall_mmap
@@ -178,7 +179,8 @@ dq syscall_seteuid
 dq syscall_setgid
 dq syscall_setegid
 dq syscall_sigsuspend
-syscallcount equ 89
+dq syscall_sigtimedwait
+syscallcount equ 90
 section .text
 global arch_syscall_entry
 ; on entry:
diff --git a/kernel-src/arch/x86-64/syscalllog.c b/kernel-src/arch/x86-64/syscalllog.c
index 2d9f7276..87e9297f 100644
--- a/kernel-src/arch/x86-64/syscalllog.c
+++ b/kernel-src/arch/x86-64/syscalllog.c
@@ -5,7 +5,7 @@
 
 #ifdef SYSCALL_LOGGING
 
-#define SYSCALL_COUNT 89
+#define SYSCALL_COUNT 90
 #define LOGSTR(x) arch_e9_puts(x)
 
 static char *name[] = {
@@ -97,7 +97,8 @@ static char *name[] = {
 	"seteuid",
 	"setgid",
 	"setegid",
-	"sigsuspend"
+	"sigsuspend",
+	"sigtimedwait"
 };
 
 static char *args[] = {
@@ -189,7 +190,8 @@ static char *args[] = {
 	"euid %d", // seteuid
 	"gid %d", // setgid
 	"egid %d", // setegid
-	"sigset %p" // sigsuspend
+	"sigset %p", // sigsuspend
+	"set %p info %p, timespec %p" // sigtimedwait
 };
 
 #endif
diff --git a/kernel-src/sys/syscalls/sigtimedwait.c b/kernel-src/sys/syscalls/sigtimedwait.c
new file mode 100644
index 00000000..05578ab6
--- /dev/null
+++ b/kernel-src/sys/syscalls/sigtimedwait.c
@@ -0,0 +1,33 @@
+#include <kernel/syscalls.h>
+#include <kernel/signal.h>
+#include <time.h>
+#include <logging.h>
+
+syscallret_t syscall_sigtimedwait(context_t *, sigset_t *uset, siginfo_t *uinfo, timespec_t *utimeout) {
+	syscallret_t ret = {
+		.ret = -1
+	};
+
+	sigset_t set;
+	timespec_t timeout;
+	siginfo_t info;
+	int signum;
+
+	ret.errno = usercopy_fromuser(&set, uset, sizeof(sigset_t));
+	if (ret.errno)
+		return ret;
+
+	ret.errno = usercopy_fromuser(&timeout, utimeout, sizeof(timespec_t));
+	if (ret.errno)
+		return ret;
+
+	ret.errno = signal_wait(&set, &timeout, &info, &signum);
+	if (ret.errno)
+		return ret;
+
+	if (uinfo)
+		ret.errno = usercopy_touser(uinfo, &info, sizeof(siginfo_t));
+
+	ret.ret = ret.errno ? -1 : 0;
+	return ret;
+}
diff --git a/patches/mlibc/jinx-working-patch.patch b/patches/mlibc/jinx-working-patch.patch
index 23747308..c9603e35 100644
--- a/patches/mlibc/jinx-working-patch.patch
+++ b/patches/mlibc/jinx-working-patch.patch
@@ -219,10 +219,10 @@ index 0000000..e5b087a
 +
 diff --git mlibc-workdir/sysdeps/astral/generic/generic.cpp mlibc-workdir/sysdeps/astral/generic/generic.cpp
 new file mode 100644
-index 0000000..32711c2
+index 0000000..f8c16e7
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
-@@ -0,0 +1,990 @@
+@@ -0,0 +1,997 @@
 +#include <bits/ensure.h>
 +#include <mlibc/debug.hpp>
 +#include <mlibc/all-sysdeps.hpp>
@@ -297,6 +297,13 @@ index 0000000..32711c2
 +		return 0;
 +	}
 +
++	int sys_sigtimedwait(const sigset_t *__restrict set, siginfo_t *__restrict info, const struct timespec *__restrict timeout, int *out_signal) {
++		long ret;
++		long err = syscall(SYSCALL_SIGTIMEDWAIT, &ret, (uint64_t)set, (uint64_t)info, (uint64_t)timeout);
++		*out_signal = ret;
++		return err;
++	}
++
 +	int sys_sigsuspend(const sigset_t *set) {
 +		long ret;
 +		return syscall(SYSCALL_SIGSUSPEND, &ret, (uint64_t)set);
@@ -1232,10 +1239,10 @@ index 0000000..990eca0
 +#endif
 diff --git mlibc-workdir/sysdeps/astral/include/astral/syscall.h mlibc-workdir/sysdeps/astral/include/astral/syscall.h
 new file mode 100644
-index 0000000..7772e74
+index 0000000..11376a2
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/include/astral/syscall.h
-@@ -0,0 +1,112 @@
+@@ -0,0 +1,113 @@
 +#ifndef _SYSCALL_H_INCLUDE
 +#define _SYSCALL_H_INCLUDE
 +
@@ -1328,6 +1335,7 @@ index 0000000..7772e74
 +#define SYSCALL_SETGID 86
 +#define SYSCALL_SETEGID 87
 +#define SYSCALL_SIGSUSPEND 88
++#define SYSCALL_SIGTIMEDWAIT 89
 +
 +#include <stddef.h>
 +#include <stdint.h>