diff --git a/third_party/go/patches/reflow-tool-library.patch b/third_party/go/patches/reflow-tool-library.patch
new file mode 100644
index 0000000..dcee286
--- /dev/null
+++ b/third_party/go/patches/reflow-tool-library.patch
@@ -0,0 +1,37 @@
+Copyright 2021 The Monogon Project Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+This adds a go_tool_library target to github.com/muesli/reflow. This can
+be removed when go_tool_library gets replaced with transition:
+https://github.com/bazelbuild/rules_go/issues/2374
+
+diff -ur a/BUILD.bazel b/BUILD.bazel
+--- a/BUILD.bazel	2021-05-21 14:36:39.411306726 +0200
++++ b/BUILD.bazel	2021-05-21 14:37:02.602460127 +0200
+@@ -1,4 +1,14 @@
+-load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
++load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test", "go_tool_library")
++
++go_tool_library(
++    name = "go_tool_library",
++    srcs = [
++        "ansibuffer.go",
++        "reflow.go",
++    ],
++    importpath = "github.com/muesli/reflow",
++    visibility = ["//visibility:public"],
++)
+ 
+ go_library(
+     name = "go_default_library",