diff --git a/setup.cfg b/setup.cfg
index b6a3d1f9..736dc260 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -34,6 +34,7 @@ install_requires =
     trame-plotly
     trame-router
     trame-server>=2.1.0
+    trame-simput
     trame-vega
     trame-vtk
     trame-vuetify