diff --git a/Makefile b/Makefile
index b9b18bd..20ec6d2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,4 +1,8 @@
 CXX = g++
+# if not macOS link statically with libstdc++
+ifeq ($(shell uname),Darwin)
+CXXFLAGS = -O3 -std=c++20 -pthread
+else
 CXXFLAGS = -O3 -std=c++20 -pthread -static
 
 TARGET = mbox2eml