diff --git a/pyproject.toml b/pyproject.toml
index 85d498b2c4b..31886b8c7ca 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -47,7 +47,7 @@ io = [
 ]
 etc = ["sparse>=0.15"]
 parallel = ["dask[complete]"]
-viz = ["cartopy>=0.23", "matplotlib", "nc-time-axis", "seaborn"]
+viz = ["cartopy>=0.23", "matplotlib>=3.8", "nc-time-axis", "seaborn"]
 types = [
   "pandas-stubs",
   "scipy-stubs",