diff --git a/gcc.spec b/gcc.spec
index eb00293..5cf5c96 100644
--- a/gcc.spec
+++ b/gcc.spec
@@ -1,10 +1,11 @@
+%global source_date_epoch_from_changelog 1
 %global DATE 20210514
 %global gitrev a3253c88425835d5b339d6998a1110a66ccd8b44
 %global gcc_version 8.5.0
 %global gcc_major 8
 # 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 25
+%global gcc_release 26
 %global nvptx_tools_gitrev c28050f60193b3b95a18866a96f03334e874e78f
 %global nvptx_newlib_gitrev aadc8eb0ec43b7cd0dd2dfb484bae63c8b05ef24
 %global _unpackaged_files_terminate_build 0
@@ -1571,9 +1572,9 @@ mv -f %{buildroot}%{_prefix}/%{_lib}/libstdc++*gdb.py* \
       %{buildroot}%{_datadir}/gdb/auto-load/%{_prefix}/%{_lib}/
 pushd ../libstdc++-v3/python
 for i in `find . -name \*.py`; do
-  touch -r $i %{buildroot}%{_prefix}/share/gcc-%{gcc_major}/python/$i
+  touch -d @$SOURCE_DATE_EPOCH %{buildroot}%{_prefix}/share/gcc-%{gcc_major}/python/$i
 done
-touch -r hook.in %{buildroot}%{_datadir}/gdb/auto-load/%{_prefix}/%{_lib}/libstdc++*gdb.py
+touch -d @$SOURCE_DATE_EPOCH %{buildroot}%{_datadir}/gdb/auto-load/%{_prefix}/%{_lib}/libstdc++*gdb.py
 popd
 for f in `find %{buildroot}%{_prefix}/share/gcc-%{gcc_major}/python/ \
 	       %{buildroot}%{_datadir}/gdb/auto-load/%{_prefix}/%{_lib}/ -name \*.py`; do
@@ -3353,6 +3354,9 @@ fi
 %{ANNOBIN_GCC_PLUGIN_DIR}/gcc-annobin.so.0.0.0
 
 %changelog
+* Fri Mar 21 2025 Siddhesh Poyarekar <siddhesh@redhat.com> 8.5.0-26
+- Pin modification time for python files to SOURCE_DATE_EPOCH (RHEL-50290).
+
 * Fri Feb 28 2025 Siddhesh Poyarekar <siddhesh@redhat.com> 8.5.0-25
 - Sync libstdc++ pretty printers to latest GTS (RHEL-50290).