diff --git a/infra/images/notebooks.Dockerfile b/infra/images/notebooks.Dockerfile
index 9ecae94..185f6b9 100644
--- a/infra/images/notebooks.Dockerfile
+++ b/infra/images/notebooks.Dockerfile
@@ -100,11 +100,10 @@ WORKDIR /home/${USERNAME}
 # Bring in the fhirworx marimo wheel from the wheel stage.
 COPY --from=wheel /src/dist/ /tmp/marimo-wheel/
 
-# This workspace resolves at build time (no committed lock), so give it the
-# same 7-day release cooldown as pyproject.toml. ENV, not a one-shot prefix:
-# the workspace lock records the span, and a runtime `uv run` without it
-# would call the lock stale and re-resolve at container start.
-ENV UV_EXCLUDE_NEWER="7 days"
+# No release cooldown here (unlike pyproject.toml's exclude-newer): this
+# workspace pulls cudf-polars-cu12 from pypi.nvidia.com, which publishes no
+# upload dates, so any exclude-newer filters out every release and the build
+# fails. uv has no per-package opt-out for date-less indexes.
 
 # Install python + init workspace venv. Use the local wheel for marimo so
 # the fhirworx frontend ships in the image; no upstream PyPI fetch for