diff --git a/.gitignore b/.gitignore
index d3967d0e3..3ce881718 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 # Bazel
-bazel-*
\ No newline at end of file
+bazel-*
+MODULE.bazel.lock
diff --git a/BUILD b/BUILD
new file mode 100644
index 000000000..9061795cc
--- /dev/null
+++ b/BUILD
@@ -0,0 +1,13 @@
+# Copyright 2024 The TCMalloc 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
+#
+#     https://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.
diff --git a/MODULE.bazel b/MODULE.bazel
new file mode 100644
index 000000000..a2843f809
--- /dev/null
+++ b/MODULE.bazel
@@ -0,0 +1,30 @@
+# Copyright 2024 The TCMalloc 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
+#
+#     https://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.
+
+module(
+    name = "tcmalloc",
+    version = "0",
+    compatibility_level = 0,
+    repo_name = "com_google_tcmalloc",
+)
+
+bazel_dep(name = "abseil-cpp", version = "20240116.2", repo_name = "com_google_absl")
+bazel_dep(name = "bazel_skylib", version = "1.7.1")
+bazel_dep(name = "google_benchmark", version = "1.8.3", repo_name = "com_github_google_benchmark")
+bazel_dep(name = "googletest", version = "1.13.0", repo_name = "com_google_googletest")
+bazel_dep(name = "protobuf", version = "26.0", repo_name = "com_google_protobuf")
+bazel_dep(name = "re2", version = "2024-02-01", repo_name = "com_googlesource_code_re2")
+bazel_dep(name = "rules_cc", version = "0.0.9")
+bazel_dep(name = "rules_fuzzing", version = "0.5.1")
+bazel_dep(name = "rules_proto", version = "4.0.0")
diff --git a/WORKSPACE.bzlmod b/WORKSPACE.bzlmod
new file mode 100644
index 000000000..61cc1ca5e
--- /dev/null
+++ b/WORKSPACE.bzlmod
@@ -0,0 +1,25 @@
+# Copyright 2024 The TCMalloc 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
+#
+#     https://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.
+
+# See MODULE.bazel for external dependencies setup.
+
+# Having both WORKSPACE and MODULE.bazel specify dependencies is brittle.
+# fuzztest is not yet available via Bazel registry, but should be soon:
+#   https://github.com/bazelbuild/bazel-central-registry/issues/1391
+load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
+http_archive(
+    name = "com_google_fuzztest",
+    strip_prefix = "fuzztest-7e084905bce6ffa97b58cf8e8945e5cea2348a5a",
+    url = "https://github.com/google/fuzztest/archive/7e084905bce6ffa97b58cf8e8945e5cea2348a5a.zip",
+)