diff --git a/crates/stdnum-py/tests/requirements.txt b/crates/stdnum-py/tests/requirements.txt
index 1421afd..7c3febb 100644
--- a/crates/stdnum-py/tests/requirements.txt
+++ b/crates/stdnum-py/tests/requirements.txt
@@ -1 +1 @@
-ty==0.0.83
+ty==0.0.84