diff --git a/environment-dev.yml b/environment-dev.yml
index 31fc9c0c53a01f2fec5c6b5e2b7fe75031245b91..deaaf2428e75d27e30fe3e9fda2f490ad4f6ed81 100644
--- a/environment-dev.yml
+++ b/environment-dev.yml
@@ -11,4 +11,4 @@ dependencies:
   - xtensor
   # Test dependencies
   - gtest
-
+  - gmock