Automatic code cleanup.

PiperOrigin-RevId: 369506249
diff --git a/tools/aquery_differ/BUILD b/tools/aquery_differ/BUILD
index b58288a..7c1401c 100644
--- a/tools/aquery_differ/BUILD
+++ b/tools/aquery_differ/BUILD
@@ -55,6 +55,8 @@
 py_test_alias(
     name = "aquery_differ_test",
     srcs = ["aquery_differ_test.py"],
+    python_version = "PY3",
+    srcs_version = "PY3",
     deps = [
         ":aquery_differ_main_lib",
         "//src/main/protobuf:analysis_v2_py_proto",