diff --git a/DRAMSys/simulator/simulator.pro b/DRAMSys/simulator/simulator.pro
index b5b297cf..adf11c06 100644
--- a/DRAMSys/simulator/simulator.pro
+++ b/DRAMSys/simulator/simulator.pro
@@ -34,6 +34,7 @@ unix:!macx {
 macx: {
         CONFIG += c++11
         QMAKE_CXXFLAGS += -std=c++0x -stdlib=libc++ -O0 -g
+        QMAKE_MACOSX_DEPLOYMENT_TARGET=10.14
 }
 
 INCLUDEPATH += ../library/src/simulation/