diff --git a/glibc.spec b/glibc.spec
index c0de74b..07c6138 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%define glibcsrcdir glibc-2.34.9000-278-g0bd356df1a
+%define glibcsrcdir glibc-2.34.9000-294-ga43c0b5483
 %define glibcversion 2.34.9000
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
@@ -151,7 +151,7 @@ end \
 Summary: The GNU libc libraries
 Name: glibc
 Version: %{glibcversion}
-Release: 20%{?dist}
+Release: 21%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
 # libraries.
@@ -2260,6 +2260,26 @@ fi
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Wed Nov 17 2021 Florian Weimer <fweimer@redhat.com> - 2.34.9000-21
+- Auto-sync with upstream branch master,
+  commit a43c0b5483da4c5e3796af309864cb44256c02db:
+- x86-64: Create microbenchmark infrastructure for libmvec
+- elf: hidden visibility for __minimal_malloc functions
+- elf: Use a temporary file to generate Makefile fragments [BZ #28550]
+- dso-ordering-test.py: Put all sources in one directory [BZ #28550]
+- elf: Move LAV_CURRENT to link_lavcurrent.h
+- Move assignment out of the CAS condition
+- Add a comment for --enable-initfini-array [BZ #27945]
+- tst-tzset: output reason when creating 4GiB file fails
+- Add LLL_MUTEX_READ_LOCK [BZ #28537]
+- Avoid extra load with CAS in __pthread_mutex_clocklock_common [BZ #28537]
+- Avoid extra load with CAS in __pthread_mutex_lock_full [BZ #28537]
+- String: Split memcpy tests so that parallel build is faster
+- x86: Shrink memcmp-sse4.S code size
+- Support C2X printf %b, %B
+- Update syscall lists for Linux 5.15
+- s390: Use long branches across object boundaries (jgh instead of jh)
+
 * Tue Nov 16 2021 Arjun Shankar <arjun@redhat.com> - 2.34.9000-20
 - Create /{bin,lib,lib64,sbin} as symbolic links in test-container
 
diff --git a/sources b/sources
index c2498fb..908fcf7 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.34.9000-278-g0bd356df1a.tar.xz) = d1f39764e96ef3b36512820bcf96eba91d3a02399cc73d7f860c8d394b9495a8678f0f0fbef36f2b80382ba46f9c4febf8a3ddf16afe662e5f9879b331394b1d
+SHA512 (glibc-2.34.9000-294-ga43c0b5483.tar.xz) = 645559c8952188a28f4c4c2fd0d28b6acac9568bbbee1663e3cb64884253a868b50396eca72099e8ee256c75b410c319a38d0107cdadb6897a16f73affff0b4d