diff --git a/go.mod b/go.mod
index 0ed557e..5d6095a 100644
--- a/go.mod
+++ b/go.mod
@@ -3,8 +3,11 @@
 module github.com/mpolden/echoip
 
 require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/jessevdk/go-flags v1.4.0
 	github.com/oschwald/geoip2-golang v1.2.1
-	github.com/oschwald/maxminddb-golang v1.2.1
-	golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5
+	github.com/oschwald/maxminddb-golang v1.2.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/stretchr/testify v1.2.2 // indirect
+	golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5 // indirect
 )
diff --git a/go.sum b/go.sum
index b893aaf..673f1b2 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,14 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/jessevdk/go-flags v1.4.0 h1:4IU2WS7AumrZ/40jfhf4QVDMsQwqA7VEHozFRrGARJA=
 github.com/jessevdk/go-flags v1.4.0/go.mod h1:4FA24M0QyGHXBuZZK/XkWh8h0e1EYbRYJSGM75WSRxI=
-github.com/oschwald/geoip2-golang v1.1.0/go.mod h1:0LTTzix/Ao1uMvOhAV4iLU0Lz7eCrP94qZWBTDKf0iE=
 github.com/oschwald/geoip2-golang v1.2.1 h1:3iz+jmeJc6fuCyWeKgtXSXu7+zvkxJbHFXkMT5FVebU=
 github.com/oschwald/geoip2-golang v1.2.1/go.mod h1:0LTTzix/Ao1uMvOhAV4iLU0Lz7eCrP94qZWBTDKf0iE=
 github.com/oschwald/maxminddb-golang v1.2.1 h1:1wUyw1BYyCY7E0bbG8lD7P5aPDFIsRr611otw6LOJtM=
 github.com/oschwald/maxminddb-golang v1.2.1/go.mod h1:3jhIUymTJ5VREKyIhWm66LJiQt04F0UCDdodShpjWsY=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
 golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5 h1:MF92a0wJ3gzSUVBpjcwdrDr5+klMFRNEEu6Mev4n00I=
 golang.org/x/sys v0.0.0-20180202135801-37707fdb30a5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=