diff --git a/go.mod b/go.mod
index 15bbb08..4aef463 100644
--- a/go.mod
+++ b/go.mod
@@ -6,9 +6,11 @@ require (
 	github.com/mailru/easyjson v0.0.0-20190614124828-94de47d64c63
 	github.com/stretchr/testify v1.3.0
 	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
-	gopkg.in/yaml.v2 v2.2.2
+	gopkg.in/yaml.v2 v2.2.4
 )
 
 replace github.com/golang/lint => golang.org/x/lint v0.0.0-20190409202823-959b441ac422
 
 replace sourcegraph.com/sourcegraph/go-diff => github.com/sourcegraph/go-diff v0.5.1
+
+go 1.13
diff --git a/go.sum b/go.sum
index 33469f5..e8a80ba 100644
--- a/go.sum
+++ b/go.sum
@@ -16,5 +16,5 @@ github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UV
 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=
-gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=