diff --git a/environment.yml b/environment.yml
index a6a1385..e55c3d4 100644
--- a/environment.yml
+++ b/environment.yml
@@ -6,7 +6,6 @@ dependencies:
 - pip:
   # bug w/notebook and traitlets: https://github.com/jupyter/notebook/issues/7048
   - traitlets==5.9.0
-  # - -r /tmp/infra-requirements.txt
   # RStudio support
   - otter-grader==2.2.7
   # for notebook exporting