--- a/Makefile.am	2025-06-25 00:05:58.000000000 +0800
+++ b/Makefile.am	2026-03-15 07:15:31.000000000 +0800
@@ -194,7 +194,7 @@
 	src/zimg/resize/x86/resize_impl_avx2.cpp \
 	src/zimg/unresize/x86/unresize_impl_avx2.cpp
 
-libavx2_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx2 -mf16c -mfma $(HSW_CFLAGS)
+libavx2_la_CXXFLAGS = $(AM_CXXFLAGS) -Wno-c++11-narrowing -mavx2 -mf16c -mfma $(HSW_CFLAGS)
 libavx2_la_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)/src/zimg $(graphengineflags)
 
 libavx512_la_SOURCES = \
@@ -206,11 +206,11 @@
 	src/zimg/resize/x86/resize_impl_avx512.cpp \
 	src/zimg/resize/x86/resize_impl_avx512_common.h
 
-libavx512_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx512f -mavx512cd -mavx512vl -mavx512bw -mavx512dq $(SKX_CFLAGS)
+libavx512_la_CXXFLAGS = $(AM_CXXFLAGS) -Wno-c++11-narrowing -mavx512f -mavx512cd -mavx512vl -mavx512bw -mavx512dq $(SKX_CFLAGS)
 libavx512_la_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)/src/zimg $(graphengineflags)
 
 libavx512_vnni_la_SOURCES = src/zimg/resize/x86/resize_impl_avx512_vnni.cpp
-libavx512_vnni_la_CXXFLAGS = $(AM_CXXFLAGS) -mavx512f -mavx512cd -mavx512vl -mavx512bw -mavx512dq -mavx512vnni $(CLX_CFLAGS)
+libavx512_vnni_la_CXXFLAGS = $(AM_CXXFLAGS) -Wno-c++11-narrowing -mavx512f -mavx512cd -mavx512vl -mavx512bw -mavx512dq -mavx512vnni $(CLX_CFLAGS)
 libavx512_vnni_la_CPPFLAGS = $(AM_CPPFLAGS) -I$(srcdir)/src/zimg $(graphengineflags)
 
 libzimg_internal_la_LIBADD += libavx2.la libavx512.la libavx512_vnni.la