diff --git a/ci/build-macos.sh b/ci/build-macos.sh
index 14b3a1b934d9f..684450a3f504f 100755
--- a/ci/build-macos.sh
+++ b/ci/build-macos.sh
@@ -12,11 +12,12 @@ fi
 
 PKG_CONFIG_PATH="${FFMPEG_SYSROOT}/lib/pkgconfig/" CC="${CC}" CXX="${CXX}" \
 meson setup build \
+    --werror \
     -Dprefix="${MPV_INSTALL_PREFIX}" \
+    -Dc_args="-Wno-error=deprecated -Wno-error=deprecated-declarations" \
     -D{libmpv,tests}=true \
     -D{gl,iconv,lcms2,lua,jpeg,plain-gl,zlib}=enabled \
     -D{cocoa,coreaudio,gl-cocoa,macos-cocoa-cb,macos-touchbar,videotoolbox-gl}=enabled
-
 meson compile -C build -j4
 meson install -C build
 ./build/mpv -v --no-config