diff --git a/python/hyperdrivetypes/prerequisite.txt b/python/hyperdrivetypes/prerequisite.txt
index 9a9907f62..22d9aee08 100644
--- a/python/hyperdrivetypes/prerequisite.txt
+++ b/python/hyperdrivetypes/prerequisite.txt
@@ -1 +1 @@
-pypechain >= 0.0.37
\ No newline at end of file
+pypechain >= 0.0.38
\ No newline at end of file