diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index a7d4c6d4cea39193fb02d5b06c3116f58bfd1a19..f277a48523488996c4296fac3c29d0ee4ee5ab0f 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -37,3 +37,6 @@ dependencies:
 
     # requires pymetis for tests for partition_mesh
     - git+https://gitlab.tiker.net/inducer/pymetis.git
+
+    # required for plot-connectivity.py example
+    - git+https://gitlab.tiker.net/inducer/pyvisfile.git