diff --git a/python/requirements.txt b/python/requirements.txt
index b9c99af..9230950 100644
--- a/python/requirements.txt
+++ b/python/requirements.txt
@@ -2,7 +2,7 @@ Cython>=0.22
 cmdstanpy==0.9.5
 pystan>=2.14
 numpy>=1.10.0
-pandas>=0.23.4
+pandas>=1.0.4
 matplotlib>=2.0.0
 LunarCalendar>=0.0.9
 convertdate>=2.1.2