diff --git a/libc/SYSCALLS.TXT b/libc/SYSCALLS.TXT
index 1435e79..45b2a1b 100644
--- a/libc/SYSCALLS.TXT
+++ b/libc/SYSCALLS.TXT
@@ -108,6 +108,7 @@
 
 int         __close:close(int)  all
 int         close_range(unsigned int, unsigned int, int) all
+ssize_t     copy_file_range(int, off64_t*, int, off64_t*, size_t, unsigned int) all
 pid_t       __getpid:getpid()  all
 int memfd_create(const char*, unsigned) all
 int         munmap(void*, size_t)  all
diff --git a/libc/include/unistd.h b/libc/include/unistd.h
index f142525..b5694b8 100644
--- a/libc/include/unistd.h
+++ b/libc/include/unistd.h
@@ -313,6 +313,17 @@
 int getdomainname(char* __buf, size_t __buf_size) __INTRODUCED_IN(26);
 int setdomainname(const char* __name, size_t __n) __INTRODUCED_IN(26);
 
+/**
+ * [copy_file_range(2)](https://man7.org/linux/man-pages/man2/copy_file_range.2.html) copies
+ * a range of data from one file descriptor to another.
+ *
+ * Returns the number of bytes copied on success, and returns -1 and sets  errno
+ * on failure.
+ *
+ * Available since API level 34.
+ */
+ssize_t copy_file_range(int __fd_in, off64_t* __off_in, int __fd_out, off64_t* __off_out, size_t __length, unsigned int __flags) __INTRODUCED_IN(34);
+
 #if __ANDROID_API__ >= 28
 void swab(const void* __src, void* __dst, ssize_t __byte_count) __INTRODUCED_IN(28);
 #endif
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index e64fe00..79f331a 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1579,6 +1579,7 @@
 LIBC_U { # introduced=UpsideDownCake
   global:
     close_range;
+    copy_file_range;
 } LIBC_T;
 
 LIBC_PRIVATE {