diff --git a/setup.py b/setup.py
index a3618d11..0c617fa6 100644
--- a/setup.py
+++ b/setup.py
@@ -42,7 +42,7 @@
 INSTALL_REQUIRES = [
     'matplotlib >= 3.0.0',
     'numpy >= 1.17.3',
-    'pandas >= 1.3.0',
+    'pandas >= 1.3.0, <2.1',
     'statsmodels >= 0.11.0',
     'scipy >= 1.2.0',
     'h5py >= 2.8.0',