diff --git a/pyproject.toml b/pyproject.toml
index 70f0979..e1cd4b5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -19,7 +19,7 @@ classifiers = [
 
 dependencies = [
     "numpy>=1.24.0,<2.0.0",
-    "pandas>=2.0.0,<3.0.0",
+    "pandas>=2.0.0,<4.0.0",
     "scipy>=1.10.0,<2.0.0",
     "yfinance>=0.2.31",
     "duckdb>=0.9.0,<2.0.0",
diff --git a/requirements.txt b/requirements.txt
index 2d1605c..949489c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # pyproject.toml. A bare `pip install -r requirements.txt` must produce a
 # working runtime environment (no missing-import surprises on cold install).
 numpy>=1.24.0,<2.0.0
-pandas>=2.0.0,<3.0.0
+pandas>=2.0.0,<4.0.0
 scipy>=1.10.0,<2.0.0
 yfinance>=0.2.31
 duckdb>=0.9.0,<2.0.0