diff --git a/build.sh b/build.sh
index 60c191c661dd8c18fbb085fa8169ab009d7944ea..4553e9dd7380c3b0118bedb73972565393759f36 100755
--- a/build.sh
+++ b/build.sh
@@ -816,8 +816,8 @@ case $TARGET in
         build_linux || failure
         ;;
     $TARGET_MAC)
-        echo "Setting macOS 10.8 deployment target..." | tee -a $LOGFILE
-        export MACOSX_DEPLOYMENT_TARGET=10.8
+        echo "Setting macOS 10.9 deployment target..." | tee -a $LOGFILE
+        export MACOSX_DEPLOYMENT_TARGET=10.9
         check_prerequisites || failure
         prepare_tree || failure
         build_mac $TARGET_MAC || failure