diff --git a/geos-trame/pyproject.toml b/geos-trame/pyproject.toml
index 0b2dce293..794d9af8d 100644
--- a/geos-trame/pyproject.toml
+++ b/geos-trame/pyproject.toml
@@ -39,6 +39,7 @@ dependencies = [
     "trame-matplotlib==2.0.3",
     "trame-components==2.4.2",
     "trame-gantt==0.1.5",
+    "mpld3<0.5.11",
     "xsdata==24.5",
     "xsdata-pydantic[lxml]==24.5",
     "pyvista==0.45.2",