diff --git a/glibc.spec b/glibc.spec
index a83e133..890b0df 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%define glibcsrcdir glibc-2.34.9000-259-gd3bf2f5927
+%define glibcsrcdir glibc-2.34.9000-275-gdb6c4935fa
 %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: 17%{?dist}
+Release: 18%{?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
+* Mon Nov 08 2021 Arjun Shankar <arjun@redhat.com> - 2.34.9000-18
+- Auto-sync with upstream branch master,
+  commit db6c4935fae6005d46af413b32aa92f4f6059dce:
+- Fix memmove call in vfprintf-internal.c:group_number
+- locale: Fix localedata/sort-test undefined behavior
+- test-memcpy.c: Double TIMEOUT to (8 * 60)
+- hurd: Remove unused __libc_close_range
+- hurd: Implement close_range and closefrom
+- x86: Double size of ERMS rep_movsb_threshold in dl-cacheinfo.h
+- x86: Optimize memmove-vec-unaligned-erms.S
+- benchtests: Add partial overlap case in bench-memmove-walk.c
+- benchtests: Add additional cases to bench-memcpy.c and bench-memmove.c
+- string: Make tests birdirectional test-memcpy.c
+- Remove the last trace of generate-md5 [BZ #28554]
+- Revert "benchtests: Add acosf function to bench-math"
+- Configure GCC with --enable-initfini-array [BZ #27945]
+- elf: Earlier missing dynamic segment check in _dl_map_object_from_fd
+- gconv: Do not emit spurious NUL character in ISO-2022-JP-3 (bug 28524)
+- [powerpc] Tighten contraints for asm constant parameters
+
 * Wed Nov 03 2021 Patsy Griffin <patsy@redhat.com> - 2.34.9000-17
 - Auto-sync with upstream branch master,
   commit d3bf2f5927d51258a51ac7fde04f4805f8ee294a.
diff --git a/sources b/sources
index 652242d..db8e5e6 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.34.9000-259-gd3bf2f5927.tar.xz) = 935261c7dee26ace72f19fcaf960602576728dfb3acd335b84500e5a75ae9580cfb6d5b03bacb572de2300dfec8d634af7abfbbcc194186b19350ad2a885b9f0
+SHA512 (glibc-2.34.9000-275-gdb6c4935fa.tar.xz) = b9d499de66f0e6483850041fe20d209c2b353725d4b9c1f9c995fbf600a24e0c0e5ff95bcf1c0d4e648e24446900fd6fd9e937fbab57e07593c86adfd267dfca