diff --git a/.github/workflows/nightly-health.yml b/.github/workflows/nightly-health.yml
index 6b0a604..cf8a200 100644
--- a/.github/workflows/nightly-health.yml
+++ b/.github/workflows/nightly-health.yml
@@ -58,7 +58,7 @@ jobs:
         # Python 3.11 is required because the [physicsnemo] extra pulls in
         # nvidia-physicsnemo, which requires Python >= 3.11.
         run: |
-          & py -3.11 -m venv "$env:RUNNER_TEMP\physiotwin4d-venv"
+          & "C:\Users\saylward\AppData\Local\Programs\Python\Python311\python.exe" -m venv "$env:RUNNER_TEMP\physiotwin4d-venv"
           echo "$env:RUNNER_TEMP\physiotwin4d-venv\Scripts" >> $env:GITHUB_PATH
 
       - name: Cache uv packages
diff --git a/.gitignore b/.gitignore
index c94f46d..005cc51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -18,6 +18,7 @@ htmlcov
 
 # AI files
 .claude
+graphify-out
 
 # Intermediate files produced by skills
 .github_review_prompt.txt