diff --git a/libc/libc.arm64.map b/libc/libc.arm64.map
index c686bb9..4953380 100644
--- a/libc/libc.arm64.map
+++ b/libc/libc.arm64.map
@@ -130,10 +130,12 @@
     __sym_ntop;
     __sym_ntos;
     __sym_ston;
+    __system_property_area_serial; # introduced=23
     __system_property_find;
     __system_property_foreach; # introduced-arm=19 introduced-arm64=21 introduced-mips=19 introduced-mips64=21 introduced-x86=19 introduced-x86_64=21
     __system_property_get;
     __system_property_read;
+    __system_property_serial; # introduced-arm=19 introduced-arm64=21 introduced-mips=19 introduced-mips64=21 introduced-x86=19 introduced-x86_64=21
     __system_property_set; # introduced-arm=12 introduced-arm64=21 introduced-mips=12 introduced-mips64=21 introduced-x86=12 introduced-x86_64=21
     __umask_chk; # introduced-arm=18 introduced-arm64=21 introduced-mips=18 introduced-mips64=21 introduced-x86=18 introduced-x86_64=21
     __vsnprintf_chk; # introduced-arm=17 introduced-arm64=21 introduced-mips=17 introduced-mips64=21 introduced-x86=17 introduced-x86_64=21
@@ -1257,8 +1259,6 @@
     __system_property_area__; # var
     __system_property_add;
     __system_property_area_init;
-    __system_property_area_serial;
-    __system_property_serial;
     __system_property_set_filename;
     __system_property_update;
     android_net_res_stats_get_info_for_net;