diff --git a/rust/platform/cpu/BUILD.bazel b/rust/platform/cpu/BUILD.bazel
new file mode 100644
index 0000000..476f8cf
--- /dev/null
+++ b/rust/platform/cpu/BUILD.bazel
@@ -0,0 +1,5 @@
+constraint_value(
+    name = "wasm32",
+    constraint_setting = "@platforms//cpu",
+    visibility = ["//visibility:public"],
+)