diff --git a/go.mod b/go.mod
index 4857eeb48c5..3add3584509 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/antihax/optional v1.0.0
 	github.com/ghodss/yaml v1.0.0
 	github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b
-	github.com/golang/protobuf v1.4.2
+	github.com/golang/protobuf v1.4.3
 	github.com/google/go-cmp v0.5.2
 	github.com/rogpeppe/fastuuid v1.2.0
 	golang.org/x/oauth2 v0.0.0-20200902213428-5d25da1a8d43
diff --git a/go.sum b/go.sum
index d0eba8c1336..c305b4e0aed 100644
--- a/go.sum
+++ b/go.sum
@@ -80,6 +80,8 @@ github.com/golang/protobuf v1.4.1 h1:ZFgWrT+bLgsYPirOnRfKLYJLvssAegOj/hgyMFdJZe0
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
diff --git a/repositories.bzl b/repositories.bzl
index e1cd58b8a69..13a0132c385 100644
--- a/repositories.bzl
+++ b/repositories.bzl
@@ -124,8 +124,8 @@ def go_repositories():
     go_repository(
         name = "com_github_golang_protobuf",
         importpath = "github.com/golang/protobuf",
-        sum = "h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=",
-        version = "v1.4.2",
+        sum = "h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=",
+        version = "v1.4.3",
     )
 
     go_repository(