diff --git a/docs/environment.yml b/docs/environment.yml
index faa2f1ca..e8f9d380 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -25,3 +25,4 @@ dependencies:
   - sphinx-copybutton
   - alabaster_jupyterhub
   - autodoc-traits
+  - sphinx-jsonschema