diff --git a/pyproject.toml b/pyproject.toml
index cb71bb499b..d502d83020 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -95,7 +95,7 @@ full = [
     "scikit-learn",
     "networkx",
     "distinctipy",
-    "matplotlib",
+    "matplotlib<3.9",  # See https://github.com/SpikeInterface/spikeinterface/issues/2863
     "cuda-python; platform_system != 'Darwin'",
     "numba",
 ]