diff --git a/.test-conda-env-py3.yml b/.test-conda-env-py3.yml
index 72c399b7f63729415eb693bd8a24135df1664a8e..2687c7d3474d9b733b4b0d261fa03726ad9d95f6 100644
--- a/.test-conda-env-py3.yml
+++ b/.test-conda-env-py3.yml
@@ -19,3 +19,4 @@ dependencies:
     - git+https://github.com/inducer/meshmode
     - git+https://github.com/inducer/dagrt
     - git+https://github.com/inducer/leap
+    - git+https://github.com/inducer/pyvisfile