diff --git a/Makefile b/Makefile
index 9f22315..fb4cabc 100644
--- a/Makefile
+++ b/Makefile
@@ -90,6 +90,8 @@ buildwindows: clean
 	./copydlls.sh
 	./copydlls.sh
 	./copyshare.sh
+	cp /usr/lib/gcc/x86_64-w64-mingw32/13-win32/*.dll TestModbus-Client-$(VERSION)/
+	for i in `ldd TestModbus-Client.exe |grep -vi "/c/windows" | cut -d" " -f3`; do cp $$i TestModbus-Client-$(VERSION)/; done
 	mv *.dll TestModbus-Client-$(VERSION)/
 	mv share TestModbus-Client-$(VERSION)/
 	zip -r TestModbus-Client-$(VERSION)-win.zip TestModbus-Client-$(VERSION)/