diff --git a/ibus-chewing-backport-ignore-mod4.patch b/ibus-chewing-backport-ignore-mod4.patch
new file mode 100644
index 0000000..3a8a6c0
--- /dev/null
+++ b/ibus-chewing-backport-ignore-mod4.patch
@@ -0,0 +1,26 @@
+From 13fe5fa09d97994f591f6549f4a82afd56a218f6 Mon Sep 17 00:00:00 2001
+From: rpm-build <rpm-build>
+Date: Sun, 11 Feb 2024 21:45:28 +0900
+Subject: [PATCH] ibus-chewing-backport-ignore-mod4.patch
+
+---
+ src/IBusChewingEngine-input-events.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+diff --git a/src/IBusChewingEngine-input-events.c b/src/IBusChewingEngine-input-events.c
+index f170f3e..c86d29a 100644
+--- a/src/IBusChewingEngine-input-events.c
++++ b/src/IBusChewingEngine-input-events.c
+@@ -10,6 +10,9 @@ gboolean ibus_chewing_engine_process_key_event(IBusEngine * engine,
+ 
+     IBusChewingEngine *self = IBUS_CHEWING_ENGINE(engine);
+ 
++    if (unmaskedMod & IBUS_MOD4_MASK)
++        return FALSE;
++
+     if (is_password(self))
+         return FALSE;
+ 
+-- 
+2.43.0
+
diff --git a/ibus-chewing.spec b/ibus-chewing.spec
index 8386d41..b04ff02 100644
--- a/ibus-chewing.spec
+++ b/ibus-chewing.spec
@@ -19,7 +19,7 @@
 %endif
 Name:           ibus-chewing
 Version:        1.6.1
-Release:        24%{?dist}
+Release:        25%{?dist}
 Summary:        The Chewing engine for IBus input platform
 Summary(zh_TW): IBus新酷音輸入法
 License:        GPL-2.0-or-later
@@ -27,6 +27,8 @@ URL:            https://github.com/definite/ibus-chewing
 Source0:        https://github.com/definite/%{name}/releases/download/%{version}/%{name}-%{version}-Source.tar.gz
 Patch1:         %{name}-1799517-no-gob2.patch
 Patch2:         %{name}-1863869-cmake-build.patch
+# https://src.fedoraproject.org/rpms/ibus-chewing/pull-request/2
+Patch3:         %{name}-backport-ignore-mod4.patch
 
 BuildRequires:  cmake >= 2.6.2
 BuildRequires:  pkgconfig
@@ -141,6 +143,9 @@ fi
 %{_libexecdir}/ibus-setup-chewing
 
 %changelog
+* Sun Feb 11 2024 Kan-Ru Chen <kanru@kanru.info> - 1.6.1-25
+- backport upstream fix for ignore mod4 key combination
+
 * Wed Jan 24 2024 Fedora Release Engineering <releng@fedoraproject.org> - 1.6.1-24
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild