diff --git a/scripts/test_lib.sh b/scripts/test_lib.sh
index 41e9a5e15311..8303d1643f5e 100644
--- a/scripts/test_lib.sh
+++ b/scripts/test_lib.sh
@@ -166,7 +166,7 @@ function run_for_module {
 }
 
 function module_dirs() {
-  echo "api pkg client/pkg client/internal/v2 client/v3 server etcdutl etcdctl tests tools/rw-heatmaps tools/testgrid-analysis ."
+  echo "api pkg client/pkg client/internal/v2 client/v3 server etcdutl etcdctl tests tools/mod tools/rw-heatmaps tools/testgrid-analysis ."
 }
 
 # maybe_run [cmd...] runs given command depending on the DRY_RUN flag.
diff --git a/tools/mod/doc.go b/tools/mod/doc.go
new file mode 100644
index 000000000000..e9cd697f803c
--- /dev/null
+++ b/tools/mod/doc.go
@@ -0,0 +1,22 @@
+// Copyright 2024 The etcd 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.
+
+// As this directory implements the pattern for tracking tool dependencies as documented here:
+// https://go.dev/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module, it doesn't
+// contain any valid go source code in the directory directly. This would break scripts for
+// unit testing, golangci-lint, and coverage calculation.
+//
+// Thus, to ensure tools to run normally, we've added this empty file.
+
+package mod
diff --git a/tools/mod/libs.go b/tools/mod/libs.go
index 48d537e2dc05..fd392d55a9f7 100644
--- a/tools/mod/libs.go
+++ b/tools/mod/libs.go
@@ -15,7 +15,7 @@
 //go:build libs
 
 // This file implements that pattern:
-// https://github.com/golang/go/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module
+// https://go.dev/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module
 // for etcd. Thanks to this file 'go mod tidy' does not removes dependencies.
 
 package libs
diff --git a/tools/mod/tools.go b/tools/mod/tools.go
index 72afb804501d..ce9af7751784 100644
--- a/tools/mod/tools.go
+++ b/tools/mod/tools.go
@@ -15,7 +15,7 @@
 //go:build tools
 
 // This file implements that pattern:
-// https://github.com/golang/go/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module
+// https://go.dev/wiki/Modules#how-can-i-track-tool-dependencies-for-a-module
 // for etcd. Thanks to this file 'go mod tidy' does not removes dependencies.
 
 package tools