diff --git a/go.mod b/go.mod
index 4e0ab29..3f54ac5 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/andersnormal/pkg v0.0.0-20190904210201-9dfdf11cc13f
 	github.com/cloudevents/sdk-go v0.10.1
 	github.com/gogo/protobuf v1.3.1 // indirect
-	github.com/golang/protobuf v1.3.2
+	github.com/golang/protobuf v1.3.5
 	github.com/google/uuid v1.1.1
 	github.com/hashicorp/go-hclog v0.9.2 // indirect
 	github.com/hashicorp/go-immutable-radix v1.1.0 // indirect
diff --git a/go.sum b/go.sum
index 70e8cdd..7b882bb 100644
--- a/go.sum
+++ b/go.sum
@@ -88,6 +88,8 @@ github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
 github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.5 h1:F768QJ1E9tib+q5Sc8MkdJi1RxLTbRcTf8LJV56aRls=
+github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=