diff --git a/go.mod b/go.mod
index 9ac0aef9ab..26ea1b2720 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/cosmos/ledger-cosmos-go v0.11.1
 	github.com/gibson042/canonicaljson-go v1.0.3
 	github.com/gogo/protobuf v1.3.1
-	github.com/golang/mock v1.4.1
+	github.com/golang/mock v1.4.2
 	github.com/golang/protobuf v1.4.0-rc.4
 	github.com/gorilla/handlers v1.4.2
 	github.com/gorilla/mux v1.7.4
diff --git a/go.sum b/go.sum
index a74fc6a545..ca38f6113c 100644
--- a/go.sum
+++ b/go.sum
@@ -132,8 +132,8 @@ github.com/golang/groupcache v0.0.0-20160516000752-02826c3e7903/go.mod h1:cIg4er
 github.com/golang/groupcache v0.0.0-20190129154638-5b532d6fd5ef/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/mock v1.4.1 h1:ocYkMQY5RrXTYgXl7ICpV0IXwlEQGwKIsery4gyXa1U=
-github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
+github.com/golang/mock v1.4.2 h1:fXIkPzOBCwDUPvYmOPzETABgbqpYlYNigQ2o64eMr5c=
+github.com/golang/mock v1.4.2/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=