diff --git a/Makefile b/Makefile
index 229c99c..ff4fe9e 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,10 @@
 # git remote add gitwit git@git.wit.org:wit/arg.git
 
+redomod:
+	rm -f go.*
+	GO111MODULE= go mod init
+	GO111MODULE= go mod tidy
+
 github:
 	git push origin register
 	git push origin devel