diff --git a/simulator/requirements.txt b/simulator/requirements.txt
index 24129cd..8e2a041 100644
--- a/simulator/requirements.txt
+++ b/simulator/requirements.txt
@@ -1,2 +1,3 @@
 pyarrow>=16.0
 duckdb>=1.0
+pytz>=2024.1  # duckdb needs it to fetch TIMESTAMPTZ values into Python