diff --git a/tests/torch_optimizers/todo_test_pi.py b/tests/torch_optimizers/todo_test_pi.py
new file mode 100644
index 00000000..18ac4115
--- /dev/null
+++ b/tests/torch_optimizers/todo_test_pi.py
@@ -0,0 +1,2 @@
+# TODO(juan43ramirez): implement a test for the PI optimizer. Rename this file to
+# test_pi.py once the test is implemented.