diff --git a/go.mod b/go.mod
index 4cf742474e0cf1c053eaa0b74c2ca4a6d433f8c5..d8cc5bc43882aa633b044b8c90b275fd2badd340 100644
--- a/go.mod
+++ b/go.mod
@@ -31,7 +31,7 @@ require (
 	github.com/gorilla/websocket v1.4.1-0.20190629185528-ae1634f6a989
 	github.com/graph-gophers/graphql-go v0.0.0-20191115155744-f33e81362277
 	github.com/hashicorp/golang-lru v0.5.4
-	github.com/holiman/uint256 v1.0.0
+	github.com/holiman/uint256 v1.1.0
 	github.com/huin/goupnp v1.0.0
 	github.com/influxdata/influxdb v1.2.3-0.20180221223340-01288bdb0883
 	github.com/jackpal/go-nat-pmp v1.0.2-0.20160603034137-1fa385a6f458
diff --git a/go.sum b/go.sum
index b05dabc286510323eae9a6c0fab25c42fec1848b..f21bc6deb2da419f66f7cc6d24220190b456712b 100644
--- a/go.sum
+++ b/go.sum
@@ -93,10 +93,8 @@ github.com/graph-gophers/graphql-go v0.0.0-20191115155744-f33e81362277 h1:E0whKx
 github.com/graph-gophers/graphql-go v0.0.0-20191115155744-f33e81362277/go.mod h1:9CQHMSxwO4MprSdzoIEobiHpoLtHm77vfxsvsIN5Vuc=
 github.com/hashicorp/golang-lru v0.5.4 h1:YDjusn29QI/Das2iO9M0BHnIbxPeyuCHsjMW+lJfyTc=
 github.com/hashicorp/golang-lru v0.5.4/go.mod h1:iADmTwqILo4mZ8BN3D2Q6+9jd8WM5uGBxy+E8yxSoD4=
-github.com/holiman/uint256 v0.0.0-20200319132535-a4d16d7dba8d h1:GHyibjawOjlV6CVRfc7nAD2fFiwadHU2p87viNQtG/c=
-github.com/holiman/uint256 v0.0.0-20200319132535-a4d16d7dba8d/go.mod h1:y4ga/t+u+Xwd7CpDgZESaRcWy0I7XMlTMA25ApIH5Jw=
-github.com/holiman/uint256 v1.0.0 h1:GV654hUWgO9gVQwgjMyup5bkUCWI9t87+LSjB9fAo5c=
-github.com/holiman/uint256 v1.0.0/go.mod h1:y4ga/t+u+Xwd7CpDgZESaRcWy0I7XMlTMA25ApIH5Jw=
+github.com/holiman/uint256 v1.1.0 h1:Iye6ze0DW9s+7EMn8y6Q4ebegDzpu28JQHEVM1Bq+Wg=
+github.com/holiman/uint256 v1.1.0/go.mod h1:y4ga/t+u+Xwd7CpDgZESaRcWy0I7XMlTMA25ApIH5Jw=
 github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/huin/goupnp v1.0.0 h1:wg75sLpL6DZqwHQN6E1Cfk6mtfzS45z8OV+ic+DtHRo=