diff --git a/.github/.lychee.toml b/.github/.lychee.toml
index 124da193..65a9d7ff 100644
--- a/.github/.lychee.toml
+++ b/.github/.lychee.toml
@@ -35,7 +35,9 @@ exclude = [
   "https://jupyterbook.org/.*",
   "https://pyswarms.readthedocs.io/.*",
   "https://docs.ray.io/.*",
-  "https://awslabs.github.io/palace/.*"
+  "https://awslabs.github.io/palace/.*",
+  # PyPI file downloads in uv.lock return transient 503s
+  "https://files.pythonhosted.org/.*"
 ]
 # Exclude paths that contain template variables or are known false positives
 exclude_path = [
diff --git a/pyproject.toml b/pyproject.toml
index d8cf6f02..a9427339 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -37,12 +37,12 @@ dev = [
   "pytest-cov",
   "pytest_regressions"
 ]
-devsim = ["devsim", "pyvista<=0.48.2", "tidy3d~=2.11.1"]
+devsim = ["devsim", "pyvista<=0.48.4", "tidy3d~=2.11.1"]
 docs = [
   "jupytext",
   "matplotlib",
   "jupyter-book>=1,<3",
-  "pyvista[all]<=0.48.2",
+  "pyvista[all]<=0.48.4",
   "bokeh",
   "scikit-learn"
 ]