diff --git a/Makefile b/Makefile
index 2430818..ea50f64 100644
--- a/Makefile
+++ b/Makefile
@@ -33,10 +33,11 @@ $(TEST_BIN): $(TEST_SRC) $(STATIC_LIB)
 	$(CC) -Wall -Ihash -o $@ $(TEST_SRC) $(STATIC_LIB)
 
 install: $(STATIC_LIB) $(SHARED_LIB)
-	mkdir -p $(DESTDIR)$(INCLUDEDIR)/hash
-	cp -r hash/*.h $(DESTDIR)$(INCLUDEDIR)/hash/
-	mkdir -p $(DESTDIR)$(LIBDIR)
-	cp $(STATIC_LIB) $(SHARED_LIB) $(DESTDIR)$(LIBDIR)/
+	install -d $(DESTDIR)$(INCLUDEDIR)/hash
+	install -m 644 hash/*.h $(DESTDIR)$(INCLUDEDIR)/hash/
+	install -d $(DESTDIR)$(LIBDIR)
+	install -m 644 $(STATIC_LIB) $(DESTDIR)$(LIBDIR)/
+	install -m 755 $(SHARED_LIB) $(DESTDIR)$(LIBDIR)/
 	@echo "Installed libraries to $(DESTDIR)$(LIBDIR) and headers to $(DESTDIR)$(INCLUDEDIR)/hash"
 
 uninstall: