diff --git a/environment.yml b/environment.yml
index c859b97835d6e04755fac098f6b251f551007d1e..b86dfe6e6ec425adb0a08075a661ed89ce021fbc 100644
--- a/environment.yml
+++ b/environment.yml
@@ -19,3 +19,4 @@ dependencies:
   - pyyaml
   - pytest
   - networkx
+  - breathe