diff --git a/glibc.spec b/glibc.spec
index 788ed96..ecaccf2 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%global glibcsrcdir glibc-2.38.9000-40-gd6fe19facc
+%global glibcsrcdir glibc-2.38.9000-55-gf6c8204fd7
 %global glibcversion 2.38.9000
 # Pre-release tarballs are pulled in from git using a command that is
 # effectively:
@@ -159,7 +159,7 @@ Version: %{glibcversion}
 # - It allows using the Release number without the %%dist tag in the dependency
 #   generator to make the generated requires interchangeable between Rawhide
 #   and ELN (.elnYY < .fcXX).
-%global baserelease 4
+%global baserelease 5
 Release: %{baserelease}%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
@@ -2198,6 +2198,25 @@ update_gconv_modules_cache ()
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Tue Aug 22 2023 Arjun Shankar <arjun@redhat.com> - 2.38.9000-5
+- Auto-sync with upstream branch master,
+  commit f6c8204fd7fabf0cf4162eaf10ccf23258e4d10e:
+- elf: Do not run constructors for proxy objects
+- x86_64: Add log1p with FMA
+- Remove references to the defunct db2 subdir
+- string: Fix tester build with fortify enable with gcc < 12
+- s390x: Fix static PIE condition for toolchain bootstrapping.
+- m68k: fix __mpn_lshift and __mpn_rshift for non-68020
+- sysdeps: tst-bz21269: fix -Wreturn-type
+- Loongarch: Add ifunc support for memcpy{aligned, unaligned, lsx, lasx} and memmove{aligned, unaligned, lsx, lasx}
+- Loongarch: Add ifunc support for strchr{aligned, lsx, lasx} and strchrnul{aligned, lsx, lasx}
+- sysdeps: tst-bz21269: handle ENOSYS & skip appropriately
+- sysdeps: tst-bz21269: fix test parameter
+- hurd: Fix strictness of <mach/thread_state.h>
+- hurd: Add prototype for and thus fix _hurdsig_abort_rpcs call
+- io/tst-statvfs: fix statfs().f_type comparison test on some arches
+- fxprintf: Get rid of alloca
+
 * Tue Aug 15 2023 Carlos O'Donell <carlos@redhat.com> - 2.38-4
 - Collect dynamic loader diagnostics from the build system.
 
diff --git a/sources b/sources
index 40a8683..48a5e57 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.38.9000-40-gd6fe19facc.tar.xz) = 8094a178dacbb8fb570a09e7730a5b4360d49e3f16f07c0527f946d1acce9d024b994eb455644f27fcbe773ee22399b7601e9e2a5d41f46bc78ae29cd3c04f82
+SHA512 (glibc-2.38.9000-55-gf6c8204fd7.tar.xz) = 0744c8adb76fa3c64c7a5bb5851f0ea0271d705b89ccec1fe257c2ecd4bfbfaf639ab20a4a9b8e456c6ad9559fde47e1393cd292301d5b8a29dd41d9dc2ca4be