diff --git a/tests/MODULE.bazel b/tests/MODULE.bazel
index 67abc841..7b1c65b3 100644
--- a/tests/MODULE.bazel
+++ b/tests/MODULE.bazel
@@ -142,6 +142,9 @@ use_repo(annex_test_2_12, "annex_test_2_12")
 
 http_file = use_repo_rule("@bazel_tools//tools/build_defs/repo:http.bzl", "http_file")
 
+# We fetch these via `http_file` instead of `rules_jvm_external` because they're used in
+# `scala_import` targets. By them not having `JavaInfo` or any extra providers added, we test that
+# `scala_import` doesn't rely on any of this information.
 http_file(
     name = "shapeless_jar",
     downloaded_file_path = "shapeless.jar",