diff --git a/glibc.spec b/glibc.spec
index 8a85e20..351127d 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%define glibcsrcdir glibc-2.34.9000-392-gb99b0f93ee
+%define glibcsrcdir glibc-2.34.9000-437-g5d28a8962d
 %define glibcversion 2.34.9000
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
@@ -148,7 +148,7 @@ end \
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: 34%{?dist}
+Release: 35%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -2154,6 +2154,55 @@ update_gconv_modules_cache ()
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Wed Dec 29 2021 Florian Weimer <fweimer@redhat.com> - 2.34.9000-35
+- Auto-sync with upstream branch master,
+  commit 5d28a8962dcb6ec056b81d730e3c6fb57185a210:
+- elf: Add _dl_find_object function
+- malloc: Remove memusage.h
+- malloc: Use hp-timing on libmemusage
+- Remove atomic-machine.h atomic typedefs
+- malloc: Remove atomic_* usage
+- microblaze: Add missing implementation when !__ASSUME_TIME64_SYSCALLS
+- elf: Do not fail for failed dlmopen on audit modules (BZ #28061)
+- elf: Issue audit la_objopen for vDSO
+- elf: Add audit tests for modules with TLSDESC
+- elf: Avoid unnecessary slowdown from profiling with audit (BZ#15533)
+- elf: Add _dl_audit_pltexit
+- elf: Add _dl_audit_pltenter
+- elf: Add _dl_audit_preinit
+- elf: Add _dl_audit_symbind_alt and _dl_audit_symbind
+- elf: Add _dl_audit_objclose
+- elf: Add _dl_audit_objsearch
+- elf: Add _dl_audit_activity_map and _dl_audit_activity_nsid
+- elf: Add _dl_audit_objopen
+- hurd: Fix static-PIE startup
+- hurd: let csu initialize tls
+- hurd: Fix XFAIL-ing mallocfork2 tests
+- hurd: XFAIL more tests that require setpshared support
+- malloc: Add missing shared thread library flags
+- stdio-common: Fix %m sprintf test output for GNU/Hurd
+- x86: Optimize L(less_vec) case in memcmpeq-evex.S
+- x86: Optimize L(less_vec) case in memcmp-evex-movbe.S
+- elf: Remove AArch64 from comment for AT_MINSIGSTKSZ
+- math: Properly cast X_TLOSS to float [BZ #28713]
+- Set default __TIMESIZE default to 64
+- stdio: Implement %#m for vfprintf and related functions
+- elf: Remove unused NEED_DL_BASE_ADDR and _dl_base_addr
+- x86-64: Add vector acos/acosf implementation to libmvec
+- intl/plural.y: Avoid conflicting declarations of yyerror and yylex
+- elf: Remove excessive p_align check on PT_LOAD segments [BZ #28688]
+- s_sincosf.h: Change pio4 type to float [BZ #28713]
+- Linux: Fix 32-bit vDSO for clock_gettime on powerpc32
+- Regenerate ulps on x86_64 with GCC 12
+- Add ARPHRD_CAN, ARPHRD_MCTP to net/if_arp.h
+- Remove ununsed tcb-offset
+- riscv: align stack before calling _dl_init [BZ #28703]
+- riscv: align stack in clone [BZ #28702]
+- elf: Fix tst-cpu-features-cpuinfo for KVM guests on some AMD systems [BZ #28704]
+- powerpc64[le]: Allocate extra stack frame on syscall.S
+- Update copyright header in recently merged ab_GE locale
+- fortify: Fix spurious warning with realpath
+
 * Tue Dec 28 2021 Florian Weimer <fweimer@redhat.com> - 2.34.9000-34
 - armhfp, i686: Revert 64-bit time_t/off_t for internal use (#2034715)
 
diff --git a/sources b/sources
index a1a1352..429d323 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.34.9000-392-gb99b0f93ee.tar.xz) = b8d50a79b7f09dba13a6abf3f8eb27905a69f1d958afc8118333c8d5f679cf334fa46cc4f33bc3ff5244dca29e3226cfdc138c8c542801ad1d49f790130be0b5
+SHA512 (glibc-2.34.9000-437-g5d28a8962d.tar.xz) = 49cf77663c7ff002fc83b1c1a7fbdc58532d469146dbcb2bdae4b622d50ac398c633f554deb889c66c8fd8db739ea76d2161d66dde13612a1b4a9052868fd337