diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index 587b7c91b0a07531bb342785f308cbd7573ddd34..a7d4c6d4cea39193fb02d5b06c3116f58bfd1a19 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -11,6 +11,7 @@ dependencies:
 - mako
 - pyopencl
 - islpy
+- gmsh
 
 # for Pytential
 - cython