diff --git a/makefile b/makefile
index be1f439..3a0b00f 100644
--- a/makefile
+++ b/makefile
@@ -5,8 +5,8 @@ all:
 	cp quadratic-tui.sh quadratic-tui
 
 install:
-	install -Dm755 quadratic $(DESTDIR)/
-	install -Dm755 quadratic-tui $(DESTDIR)/
+	sudo install -Dm755 quadratic $(DESTDIR)/
+	sudo install -Dm755 quadratic-tui $(DESTDIR)/
 
 uninstall:
 	rm $(DESTDIR)/{quadratic,quadratic-tui}