diff --git a/pyproject.toml b/pyproject.toml
index 3ba78c3..c5bdb54 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ numpy = ">=1.26,<3.0"
 pandas = "^2.2.3"
 typer = "^0.12.3"
 click = ">=8.1,<8.2"
-matplotlib = "~3.8"
+matplotlib = ">=3.8,<3.11"
 lifelines = "^0.30"
 pyarrow = ">=14,<22"
 pyreadr = "^0.5"