diff --git a/pyproject.toml b/pyproject.toml
index 6de6f3cb..75e1fe4c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,7 +38,7 @@ dependencies = [
     "harmonypy", 
     "leidenalg", 
     "louvain",
-    "matplotlib",
+    "matplotlib<=3.7.3",
     "mofapy2",
     "mudata>=0.2.1",
     "muon",