diff --git a/google-noto-fonts.changes b/google-noto-fonts.changes
index e733651..e445c2b 100644
--- a/google-noto-fonts.changes
+++ b/google-noto-fonts.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Fri Nov 17 08:38:12 UTC 2023 - Bernhard Wiedemann <bwiedemann@suse.com>
+
+- make build reproducible (boo#1047218)
+
 -------------------------------------------------------------------
 Mon Aug 22 21:57:20 UTC 2022 - Gordon Leung <pirateclip@protonmail.com>
 
diff --git a/google-noto-fonts.spec b/google-noto-fonts.spec
index c3e64a2..ca907c9 100644
--- a/google-noto-fonts.spec
+++ b/google-noto-fonts.spec
@@ -3005,6 +3005,7 @@ tar -xzf %{SOURCE0} -C .
 # Fix weight too https://github.com/notofonts/Arimo/issues/13
 ttx ttf/Arimo/Arimo-BoldItalic.ttf
 %patch0
+touch -d 2022-08-22 ttf/Arimo/Arimo-BoldItalic.ttx # have constant mtime after patch0 so output files do not vary across builds - may be dropped once https://github.com/notofonts/Arimo/pull/17 gets into the .tar
 ttx -f ttf/Arimo/Arimo-BoldItalic.ttx
 rm ttf/Arimo/Arimo-BoldItalic.ttx