diff --git a/pyproject.toml b/pyproject.toml
index 8ca11ae9..d3d4bf20 100755
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -122,9 +122,13 @@ environments = ["sys_platform == 'linux'"]
 torch = [{ index = "pytorch-cpu" }]
 torchvision = [{ index = "pytorch-cpu" }]
 torchaudio = [{ index = "pytorch-cpu" }]
-# Pinned to PR #22 head (fix for issue #415: mpi4py auto-init aborts in PyTorch
-# DataLoader spawn-workers). Revert to branch = "main" once the PR merges upstream.
-dlio-benchmark = { git = "https://github.com/mlcommons/DLIO_local_changes.git", rev = "60fd3b8e7ae9cc8be644b47df0661366ac2c8bd6" }
+# Pinned to FileSystemGuy-combined-391-448 head — carries:
+#   - DLIO PR #21 fix for storage #391 part 1 (TorchIterableDatasetSimple gating)
+#   - DLIO PR #22 fix for storage #415 (mpi4py auto-init in spawn workers)
+#   - DLIO PR #23 fix for storage #391 part 2 (sudo -n + warn-once for drop_caches)
+#   - DLIO PR #24 fix for storage #448 (per-node worker-memory budget)
+# Revert to branch = "main" once PRs #23 and #24 merge upstream.
+dlio-benchmark = { git = "https://github.com/mlcommons/DLIO_local_changes.git", rev = "814f3ff400c865a294bfc70714a3289efbfa83ac" }
 
 [dependency-groups]
 dev = [
diff --git a/uv.lock b/uv.lock
index ef8236da..5137a3b7 100644
--- a/uv.lock
+++ b/uv.lock
@@ -237,7 +237,7 @@ wheels = [
 [[package]]
 name = "dlio-benchmark"
 version = "3.0.2"
-source = { git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=60fd3b8e7ae9cc8be644b47df0661366ac2c8bd6#60fd3b8e7ae9cc8be644b47df0661366ac2c8bd6" }
+source = { git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=814f3ff400c865a294bfc70714a3289efbfa83ac#814f3ff400c865a294bfc70714a3289efbfa83ac" }
 dependencies = [
     { name = "dgen-py", marker = "sys_platform == 'linux'" },
     { name = "h5py", marker = "sys_platform == 'linux'" },
@@ -583,8 +583,8 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "dlio-benchmark", git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=60fd3b8e7ae9cc8be644b47df0661366ac2c8bd6" },
-    { name = "dlio-benchmark", marker = "extra == 'full'", git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=60fd3b8e7ae9cc8be644b47df0661366ac2c8bd6" },
+    { name = "dlio-benchmark", git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=814f3ff400c865a294bfc70714a3289efbfa83ac" },
+    { name = "dlio-benchmark", marker = "extra == 'full'", git = "https://github.com/mlcommons/DLIO_local_changes.git?rev=814f3ff400c865a294bfc70714a3289efbfa83ac" },
     { name = "elasticsearch", marker = "extra == 'vectordb'", specifier = ">=8.0" },
     { name = "elasticsearch", marker = "extra == 'vectordb-elasticsearch'", specifier = ">=8.0" },
     { name = "minio", specifier = ">=7.2.20" },