diff --git a/patches/mlibc/jinx-working-patch.patch b/patches/mlibc/jinx-working-patch.patch
index 78e78262..ec41d469 100644
--- a/patches/mlibc/jinx-working-patch.patch
+++ b/patches/mlibc/jinx-working-patch.patch
@@ -133,10 +133,10 @@ 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..023c581
+index 0000000..d233630
 --- /dev/null
 +++ mlibc-workdir/sysdeps/astral/generic/generic.cpp
-@@ -0,0 +1,422 @@
+@@ -0,0 +1,427 @@
 +#include <bits/ensure.h>
 +#include <mlibc/debug.hpp>
 +#include <mlibc/all-sysdeps.hpp>
@@ -211,6 +211,11 @@ index 0000000..023c581
 +		return 0;
 +	}
 +
++	int sys_fsync(int fd) {
++		// TODO as the VFS does not do caching as of yet, this system call is stubbed and should be implemented once caching is done
++		return 0;
++	}
++
 +	int sys_tcgetattr(int fd, struct termios *attr){
 +		int res;
 +		return sys_ioctl(fd, TCGETS, (void *)attr, &res);