diff --git a/.bazelversion b/.bazelversion
index 09b254e..66ce77b 100644
--- a/.bazelversion
+++ b/.bazelversion
@@ -1 +1 @@
-6.0.0
+7.0.0
diff --git a/.gitignore b/.gitignore
index 477386b..6a7fbb4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /**/*.egg-info
 scratch
 bazel-*
+MODULE.bazel.lock
diff --git a/MODULE.bazel b/MODULE.bazel
new file mode 100644
index 0000000..f07024e
--- /dev/null
+++ b/MODULE.bazel
@@ -0,0 +1,12 @@
+bazel_dep(name = "bazel_skylib", version = "1.4.0")
+bazel_dep(name = "rules_python", version = "0.31.0")
+
+pip = use_extension("@rules_python//python/extensions:pip.bzl", "pip")
+
+pip.parse(
+    hub_name = "pypi",
+    python_version = "3.11",
+    requirements_lock = "//tools/python:requirements_lock.txt",
+)
+
+use_repo(pip, "pypi")
diff --git a/WORKSPACE b/WORKSPACE
deleted file mode 100644
index 3770ab1..0000000
--- a/WORKSPACE
+++ /dev/null
@@ -1,52 +0,0 @@
-workspace(
-    name = "flowmetal"
-)
-
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
-load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
-
-http_archive(
-    name = "bazel_skylib",
-    sha256 = "b8a1527901774180afc798aeb28c4634bdccf19c4d98e7bdd1ce79d1fe9aaad7",
-    urls = [
-        "https://mirror.bazel.build/github.com/bazelbuild/bazel-skylib/releases/download/1.4.1/bazel-skylib-1.4.1.tar.gz",
-        "https://github.com/bazelbuild/bazel-skylib/releases/download/1.4.1/bazel-skylib-1.4.1.tar.gz",
-    ],
-)
-
-load("@bazel_skylib//:workspace.bzl", "bazel_skylib_workspace")
-
-bazel_skylib_workspace()
-
-rules_python_version = "c504355672223144cefb2cbf3f69e2d38e7e2726"
-
-http_archive(
-    name = "rules_python",
-    sha256 = "3f12b492dbf7d56b0e3deed81f21d56c3241babaa52d7eb525cb7c657bba9125",
-    strip_prefix = "rules_python-{}".format(rules_python_version),
-    url = "https://github.com/bazelbuild/rules_python/archive/{}.zip".format(rules_python_version),
-)
-
-load("@rules_python//python:repositories.bzl", "python_register_toolchains")
-
-python_register_toolchains(
-    name = "python3_10",
-    python_version = "3.10",
-)
-
-load("@python3_10//:defs.bzl", python3_10="interpreter")
-
-load("@rules_python//python:pip.bzl", "pip_parse")
-
-# Create a central repo that knows about the dependencies needed from
-# requirements_lock.txt.
-pip_parse(
-   name = "pypi",
-   python_interpreter_target = python3_10,
-   requirements_lock = "//tools/python:requirements_lock.txt",
-)
-
-load("@pypi//:requirements.bzl", "install_deps")
-
-install_deps()