diff --git a/setup.py b/setup.py
index 788139afd7f1f465c691a04567e835eeee9def0e..8f76ba988d179751285065c909c78047af410b32 100644
--- a/setup.py
+++ b/setup.py
@@ -13,5 +13,5 @@ setup(
     description=metainfo['title'],
     long_description=metainfo['description'],
     packages=find_packages(),
-    install_requires=['numpy', 'pandas', 'matplotlib','scikit-learn','ipywidgets','nglview','ase','jupyter_helpers', 'jupyter_jsmol'],
+    install_requires=['numpy', 'pandas', 'matplotlib','scikit-learn','ipywidgets','nglview','ase','jupyter_helpers', 'jupyter_jsmol==2021.3.0'],
 )