diff --git a/glibc.spec b/glibc.spec
index 6b68f7f..3511847 100644
--- a/glibc.spec
+++ b/glibc.spec
@@ -1,4 +1,4 @@
-%global glibcsrcdir glibc-2.38-8-g2af141bda3
+%global glibcsrcdir glibc-2.38-18-g89da8bc588
 %global glibcversion 2.38
 # 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 3
+%global baserelease 4
 Release: %{baserelease}%{?dist}
 
 # In general, GPLv2+ is used by programs, LGPLv2+ is used for
@@ -2196,6 +2196,19 @@ update_gconv_modules_cache ()
 %files -f compat-libpthread-nonshared.filelist -n compat-libpthread-nonshared
 
 %changelog
+* Mon Sep 11 2023 Florian Weimer <fweimer@redhat.com> - 2.38-4
+- Auto-sync with upstream branch release/2.38/master,
+  commit 89da8bc588c2296252543b049bf6d9272321f90d:
+- elf: Move l_init_called_next to old place of l_text_end in link map
+- elf: Remove unused l_text_end field from struct link_map
+- elf: Always call destructors in reverse constructor order (bug 30785)
+- elf: Do not run constructors for proxy objects
+- libio: Fix oversized __io_vtables
+- io: Fix record locking contants for powerpc64 with __USE_FILE_OFFSET64
+- sysdeps: tst-bz21269: fix -Wreturn-type
+- sysdeps: tst-bz21269: handle ENOSYS & skip appropriately
+- sysdeps: tst-bz21269: fix test parameter
+
 * Tue Aug 22 2023 Arjun Shankar <arjun@redhat.com> - 2.38-3
 - Auto-sync with upstream branch release/2.38/master,
   commit 2af141bda3cd407abd4bedf615f9e45fe79518e2.
diff --git a/sources b/sources
index 7a2f6f7..b181485 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (glibc-2.38-8-g2af141bda3.tar.xz) = 556a39543c71906cc02f75d7a8d6211a35f4eb36b40324776472247fd7cea48e4d39d8812c4f633c70f63033503211f35644b75b6bb3a453fd6a5423b50a2600
+SHA512 (glibc-2.38-18-g89da8bc588.tar.xz) = c230d6df3fdb52ecbf7064030603cad9326b05c90a11455c8571496fe6e56721bd8c9eda15108ed5ab2ed03ce28a6fb3e00ada576d233053f157d85278bec8d7