diff --git a/setup.py b/setup.py
index acff214..a1cb89e 100644
--- a/setup.py
+++ b/setup.py
@@ -26,7 +26,7 @@
     url='https://github.com/machow/siuba',
     keywords=['package', ],
     install_requires=[
-        "pandas>=0.24.0",
+        "pandas>=0.24.0,<2.1.0",
         "numpy>=1.12.0",
         "SQLAlchemy>=1.2.19",
         "PyYAML>=3.0.0"
@@ -41,7 +41,7 @@
             "duckdb_engine",
             # duckdb 0.8.0 has a bug which always errors for pandas v2+
             # it's been fixed, but we need to pin until duckdb v0.9.0
-            "duckdb<0.8.1",
+            "duckdb",
         ],
         "docs": [
             "plotnine",