diff --git a/CHANGELOG.md b/CHANGELOG.md
index 469e9d3612..bcc021afa9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -82,6 +82,8 @@ END_UNRELEASED_TEMPLATE
 * (venvs) {obj}`--vens_site_packages=yes` no longer errors when packages with
   overlapping files or directories are used together.
   ([#3204](https://github.com/bazel-contrib/rules_python/issues/3204)).
+* (uv) {obj}`//python/uv:lock.bzl%lock` now works with a local platform
+  runtime.
 
 {#v0-0-0-added}
 ### Added
diff --git a/python/uv/private/lock.bzl b/python/uv/private/lock.bzl
index 281a0decc0..b007baf9c1 100644
--- a/python/uv/private/lock.bzl
+++ b/python/uv/private/lock.bzl
@@ -106,7 +106,7 @@ def _lock_impl(ctx):
     exec_tools = ctx.toolchains[EXEC_TOOLS_TOOLCHAIN_TYPE].exec_tools
     runtime = exec_tools.exec_interpreter[platform_common.ToolchainInfo].py3_runtime
     python = runtime.interpreter or runtime.interpreter_path
-    python_files = runtime.files
+    python_files = runtime.files or depset()
     args.add("--python", python)
     args.add_all(srcs)