diff --git a/gcc.spec b/gcc.spec
index 677ebab..f2a7930 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -5,7 +5,7 @@
 %global gcc_major 11
 # Note, gcc_release must be integer, if you want to add suffixes to
 # %%{release}, append them after %%{gcc_release} on Release: line.
-%global gcc_release 10
+%global gcc_release 11
 %global nvptx_tools_gitrev 5f6f343a302d620b0868edab376c00b15741e39e
 %global newlib_cygwin_gitrev 50e2a63b04bdd018484605fbb954fd1bd5147fa0
 %global _unpackaged_files_terminate_build 0
@@ -203,7 +203,10 @@ BuildRequires: glibc >= 2.3.90-35
 %endif
 %ifarch %{multilib_64_archs} sparcv9 ppc
 # Ensure glibc{,-devel} is installed for both multilib arches
-BuildRequires: /lib/libc.so.6 /usr/lib/libc.so /lib64/libc.so.6 /usr/lib64/libc.so
+BuildRequires: (glibc32 or glibc-devel(%{__isa_name}-32))
+%endif
+%ifarch sparcv9 ppc
+BuildRequires: (glibc64 or glibc-devel(%{__isa_name}-64))
 %endif
 %if %{build_ada}
 # Ada requires Ada to build
@@ -3669,6 +3672,9 @@ end
 %endif
 
 %changelog
+* Thu Jul 31 2025 Florian Weimer  <fweimer@redhat.com> - 11.5.0-11
+- Adjust glibc32 build dependency (RHEL-105072)
+
 * Tue Jul 29 2025 Florian Weimer  <fweimer@redhat.com> - 11.5.0-10
 - Exception handling performance improvements (RHEL-105072)
 - libgcc: Use _dl_find_object to find DWARF data in unwinder