diff --git a/go.mod b/go.mod
index fd26ed6..1c3d156 100644
--- a/go.mod
+++ b/go.mod
@@ -1,5 +1,7 @@
 module git.sr.ht/~sircmpwn/aerc
 
+go 1.12
+
 require (
 	git.sr.ht/~sircmpwn/getopt v0.0.0-20190609193657-e7e23d1cd3a3
 	git.sr.ht/~sircmpwn/pty v0.0.0-20190330154901-3a43678975a9