diff --git a/environment.yml b/environment.yml
index 6d3599daae1..59da77edde9 100644
--- a/environment.yml
+++ b/environment.yml
@@ -19,7 +19,6 @@ dependencies:
  - spyder
  - pyzmq
  - wrapt
- - pyyaml
  - lxml
  - scipy
  - gitpython