diff --git a/WORKSPACE b/WORKSPACE
index 5155dc527..b76442d9e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -3,8 +3,11 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "io_bazel_rules_go",
-    sha256 = "a82a352bffae6bee4e95f68a8d80a70e87f42c4741e6a448bec11998fcc82329",
-    url = "https://github.com/bazelbuild/rules_go/releases/download/0.18.5/rules_go-0.18.5.tar.gz",
+    sha256 = "f04d2373bcaf8aa09bccb08a98a57e721306c8f6043a2a0ee610fd6853dcde3d",
+    urls = [
+        "https://storage.googleapis.com/bazel-mirror/github.com/bazelbuild/rules_go/releases/download/0.18.6/rules_go-0.18.6.tar.gz",
+        "https://github.com/bazelbuild/rules_go/releases/download/0.18.6/rules_go-0.18.6.tar.gz",
+    ],
 )
 
 http_archive(
@@ -17,7 +20,7 @@ load("@io_bazel_rules_go//go:deps.bzl", "go_rules_dependencies", "go_register_to
 
 go_rules_dependencies()
 
-go_register_toolchains(go_version = "1.12.5")
+go_register_toolchains(go_version = "1.12.6")
 
 load("@bazel_gazelle//:deps.bzl", "gazelle_dependencies", "go_repository")