diff --git a/deployments/data101/image/environment.yml b/deployments/data101/image/environment.yml
index 313b9c50b..7436db03a 100644
--- a/deployments/data101/image/environment.yml
+++ b/deployments/data101/image/environment.yml
@@ -108,3 +108,4 @@ dependencies:
   - git+https://github.com/shaneknapp/python-popularity-contest.git@add-error-handling
   # pulled in by ottr, if not pinned to 1.16.2, 1.16.3 causes DH-323
   - jupytext==1.16.2
+  - jupyterlab-a11y-checker==0.1.2 # Adding a11y-checker for Data 101 staff's exploration