diff --git a/go.mod b/go.mod
index aba29289e91139ebb799277ab04060b551ede49c..58a6cd4dae37810ca79075b7817aec07bab554b7 100644
--- a/go.mod
+++ b/go.mod
@@ -1,3 +1,8 @@
 module github.com/richardwilkes/cef
 
-require github.com/richardwilkes/toolbox v1.1.3
+require (
+	github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 // indirect
+	github.com/richardwilkes/toolbox v1.1.3
+	github.com/stretchr/testify v1.3.0 // indirect
+	golang.org/x/sys v0.0.0-20190114130336-2be517255631 // indirect
+)
diff --git a/go.sum b/go.sum
index 9d035924af326731068753269628d82f624a6166..a0921e56a5c8e76d36e32c5a2a16456d0364f16c 100644
--- a/go.sum
+++ b/go.sum
@@ -1,3 +1,4 @@
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 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/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
@@ -9,14 +10,21 @@ github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/pkg/term v0.0.0-20181116001808-27bbf2edb814 h1:qWlKm6sU/AyVAgBC1Pg1uuY/X/p4lNYG7t4v8/f4FJE=
 github.com/pkg/term v0.0.0-20181116001808-27bbf2edb814/go.mod h1:eCbImbZ95eXtAUIbLAuAVnBnwf83mjf6QIVH8SHYwqQ=
+github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942 h1:A7GG7zcGjl3jqAqGPmcNjd/D9hzL95SuoOQAaFNdLU0=
+github.com/pkg/term v0.0.0-20190109203006-aa71e9d9e942/go.mod h1:eCbImbZ95eXtAUIbLAuAVnBnwf83mjf6QIVH8SHYwqQ=
 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/richardwilkes/toolbox v1.1.3 h1:alQu+xxpfWKpzlxAkYevRY40IiD8U2aegJ6USDELpGw=
 github.com/richardwilkes/toolbox v1.1.3/go.mod h1:e/y5ODoUj7gDs7Rrovgn7g4btCm/eA7IALsVGwAW9hg=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
 github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0Q=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 golang.org/x/sys v0.0.0-20181212120007-b05ddf57801d h1:G59MrP9Qg6bymPjN3yGmqnmuCEH1h0eFP8zpRpl1RiU=
 golang.org/x/sys v0.0.0-20181212120007-b05ddf57801d/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190114130336-2be517255631 h1:g/5trXm6f9Tm+ochb21RlFNnF63lt+elB9hVBqtPu5Y=
+golang.org/x/sys v0.0.0-20190114130336-2be517255631/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=