diff --git a/go.sum b/go.sum
index 9b301de..93773ca 100644
--- a/go.sum
+++ b/go.sum
@@ -76,7 +76,6 @@ github.com/smartystreets/assertions v1.0.1/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUr
 github.com/smartystreets/goconvey v0.0.0-20190710185942-9d28bd7c0945/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
-github.com/zenhack/go.notmuch v0.0.0-20190821052706-5a1961965cfb h1:eZBIw4TilXSAEYcWKf51bERhwH431YwntDYus0Bgxh0=
 github.com/zenhack/go.notmuch v0.0.0-20190821052706-5a1961965cfb/go.mod h1:zJtFvR3NinVdmBiLyB4MyXKmqyVfZEb2cK97ISfTgV8=
 golang.org/x/image v0.0.0-20190523035834-f03afa92d3ff/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
 golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=