diff --git a/environment.yml b/environment.yml
index ad98cbb00f6..6d3599daae1 100644
--- a/environment.yml
+++ b/environment.yml
@@ -18,7 +18,6 @@ dependencies:
  - pytest-runner
  - spyder
  - pyzmq
- - ruamel_yaml
  - wrapt
  - pyyaml
  - lxml
@@ -36,4 +35,4 @@ dependencies:
  - pip:
     - broadbean>=0.9.1
     - ruamel.yaml!=0.16.6
-    - opencensus-ext-azure
\ No newline at end of file
+    - opencensus-ext-azure