diff --git a/guile.changes b/guile.changes
index 4ff07d6..f24cbff 100644
--- a/guile.changes
+++ b/guile.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Mon Mar 21 20:52:02 UTC 2022 - Dirk Müller <dmueller@suse.com>
+
+- use parallel build for Rings
+- force LTO
+
 -------------------------------------------------------------------
 Mon Mar 21 10:38:43 UTC 2022 - Andreas Schwab <schwab@suse.de>
 
diff --git a/guile.spec b/guile.spec
index 89a05ce..113c05a 100644
--- a/guile.spec
+++ b/guile.spec
@@ -119,10 +119,15 @@ aclocal
 %configure \
   --disable-static \
   --with-pic \
+  --enable-lto \
   --with-threads \
   --disable-silent-rules
+%if 0%{?_with_ringdisabled}
+%make_build
+%else
 # do sequential build for reproducible .go files = https://issues.guix.gnu.org/issue/20272 - boo#1102408
 %make_build -j1
+%endif
 
 %check
 LD_LIBRARY_PATH="." \