From 8abdd2def30fe4ce813c89657144b1d75116db8e Mon Sep 17 00:00:00 2001
From: Remco de Boer <29308176+redeboer@users.noreply.github.com>
Date: Mon, 20 May 2024 17:50:22 +0200
Subject: [PATCH] FIX: limit `matplotlib` installation

---
 pyproject.toml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/pyproject.toml b/pyproject.toml
index 1bef3a57b..e6116b9ef 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -69,6 +69,7 @@ doc = [
     "ampform[all]",
     "black",
     "ipympl",
+    "matplotlib <3.9.0", # https://github.com/ComPWA/ampform/issues/279
     "matplotlib",
     "mpl-interactions",
     "myst-nb >=0.14", # nb_ configuration prefixes