diff --git a/glibc.spec b/glibc.spec
index 00c0922..a42e26c 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%global glibcsrcdir glibc-2.35.9000-448-g8162147872
+%global glibcsrcdir glibc-2.35.9000-458-g9403b71ae9
 %global glibcversion 2.35.9000
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
@@ -152,7 +152,7 @@ end}
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: 17%{?dist}
+Release: 18%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -2175,6 +2175,20 @@ update_gconv_modules_cache ()
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Mon May 16 2022 Arjun Shankar <arjun@redhat.com> - 2.35.9000-18
+- Auto-sync with upstream branch master,
+  commit 9403b71ae97e3f1a91c796ddcbb4e6f044434734:
+- x86_64: Remove bzero optimization
+- RISC-V: Use an autoconf template to produce `preconfigure'
+- MIPS: Use an autoconf template to produce `preconfigure'
+- m68k: Use an autoconf template to produce `preconfigure'
+- C-SKY: Use an autoconf template to produce `preconfigure'
+- Remove configure fno_unit_at_a_time
+- stdio: Remove the usage of $(fno-unit-at-a-time) for siglist.c
+- stdio: Remove the usage of $(fno-unit-at-a-time) for errlist.c
+- Add declare_object_symbol_alias for assembly codes (BZ #28128)
+- wcrtomb: Make behavior POSIX compliant
+
 * Tue May 10 2022 Patsy Griffin <patsy@redhat.com> - 2.35.9000-17
 - Auto-sync with upstream branch master,
   commit 8162147872491bb5b48e91543b19c49a29ae6b6d.
diff --git a/sources b/sources
index 828e7dd..09b7e19 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.35.9000-448-g8162147872.tar.xz) = 01d7823ea6b6b1c39c4097a807c03610944be3184f5175789b75d48d7d808fe8eb589107901447858ed60747df3189ed89e6049e70b384fca457465a88733b06
+SHA512 (glibc-2.35.9000-458-g9403b71ae9.tar.xz) = d966148953d972c0e80d7ca2d7c62024d815eb14580033b0cd1475e7995681d3d8245a0c8f2da4222fe6d77370782d473a016c3a79890fd86a2914a1dfa82959