diff --git a/man7/vdso.7 b/man7/vdso.7
index 120d4dd28..4a7ab3111 100644
--- a/man7/vdso.7
+++ b/man7/vdso.7
@@ -370,6 +370,7 @@ symbol	version
 _
 __kernel_clock_getres	LINUX_2.6.15
 __kernel_clock_gettime	LINUX_2.6.15
+__kernel_clock_gettime64	LINUX_5.10
 __kernel_datapage_offset	LINUX_2.6.15
 __kernel_get_syscall_map	LINUX_2.6.15
 __kernel_get_tbfreq	LINUX_2.6.15