diff --git a/Well-known-struct-tags.md b/Well-known-struct-tags.md
index fa3db8cb..a73d8ecd 100644
--- a/Well-known-struct-tags.md
+++ b/Well-known-struct-tags.md
@@ -37,4 +37,5 @@ spanner   | https://godoc.org/cloud.google.com/go/spanner
 bson      | https://godoc.org/labix.org/v2/mgo/bson
 gorm      | https://godoc.org/github.com/jinzhu/gorm
 yaml      | https://godoc.org/gopkg.in/yaml.v2
-validate  | https://github.com/go-playground/validator
\ No newline at end of file
+validate  | https://github.com/go-playground/validator
+mapstructure | https://godoc.org/github.com/mitchellh/mapstructure
\ No newline at end of file