diff --git a/Makefile b/Makefile
index 428c207..cfcd181 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,7 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
+export GO111MODULE=on
+
 build:
 	cd epson/faxmachine &&\
 	go build -o ../library_bridge.so -buildmode=c-shared ../library_bridge.go