diff --git a/go.mod b/go.mod
index 1102659..d82d3c2 100644
--- a/go.mod
+++ b/go.mod
@@ -3,6 +3,6 @@ module github.com/glenux/trello2mail-go
 require (
 	github.com/adlio/trello v0.0.0-20180621142300-8a458717123e
 	github.com/pkg/errors v0.8.0 // indirect
+	github.com/russross/blackfriday v2.0.0+incompatible
 	github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 // indirect
-	gopkg.in/russross/blackfriday.v2 v2.0.0
 )
diff --git a/go.sum b/go.sum
index 35c184d..18ceff6 100644
--- a/go.sum
+++ b/go.sum
@@ -2,6 +2,8 @@ github.com/adlio/trello v0.0.0-20180621142300-8a458717123e h1:i5+hZJx4iTPT4+ojV5
 github.com/adlio/trello v0.0.0-20180621142300-8a458717123e/go.mod h1:VjzhFGdnEJGih1AsIWi/yU6y01yZh0DuEWCNAyOJ1WE=
 github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
 github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/russross/blackfriday v2.0.0+incompatible h1:cBXrhZNUf9C+La9/YpS+UHpUT8YD6Td9ZMSU9APFcsk=
+github.com/russross/blackfriday v2.0.0+incompatible/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
 github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 h1:/vdW8Cb7EXrkqWGufVMES1OH2sU9gKVb2n9/1y5NMBY=
 github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95/go.mod h1:1NzhyTcUVG4SuEtjjoZeVRXNmyL/1OwPU0+IJeTBvfc=
 gopkg.in/russross/blackfriday.v2 v2.0.0 h1:+FlnIV8DSQnT7NZ43hcVKcdJdzZoeCmJj4Ql8gq5keA=