diff --git a/altbn128/bn256/go.mod b/altbn128/bn256/go.mod
index 53b5837..29539b6 100644
--- a/altbn128/bn256/go.mod
+++ b/altbn128/bn256/go.mod
@@ -2,7 +2,4 @@ module github.com/clearmatics/bn256
 
 go 1.12
 
-require (
-	github.com/stretchr/testify v1.3.0
-	golang.org/x/sys v0.0.0-20190516110030-61b9204099cb
-)
+require golang.org/x/sys v0.1.0
diff --git a/altbn128/bn256/go.sum b/altbn128/bn256/go.sum
index 678c78b..b69ea85 100644
--- a/altbn128/bn256/go.sum
+++ b/altbn128/bn256/go.sum
@@ -1,9 +1,2 @@
-github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-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/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-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 v0.0.0-20190516110030-61b9204099cb h1:k07iPOt0d6nEnwXF+kHB+iEg+WSuKe/SOQuFM2QoD+E=
-golang.org/x/sys v0.0.0-20190516110030-61b9204099cb/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.1.0 h1:kunALQeHf1/185U1i0GOB/fy1IPRDDpuoOOqRReG57U=
+golang.org/x/sys v0.1.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=