diff --git a/pyproject.toml b/pyproject.toml
index 6d4486f6..cecbf854 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,7 +34,7 @@ dependencies = [
     "scipy",
     "numpy",
     "pandas>=2.0.0,<2.2.0",
-    "matplotlib>=3.6.1,<3.9.0",
+    "matplotlib>=3.6.1,<3.8.0",
 ]
 classifiers = [
     "Programming Language :: Python :: 3",