diff --git a/AI-Upscaling-With-NPU/pyproject.toml b/AI-Upscaling-With-NPU/pyproject.toml
index dbef9c3..fe7e3d8 100644
--- a/AI-Upscaling-With-NPU/pyproject.toml
+++ b/AI-Upscaling-With-NPU/pyproject.toml
@@ -47,6 +47,16 @@ dev = [
     "ruff>=0.9.6",
 ]
 
+#<<<<<<< docs/note-uv-required
+
+# NOTE: Install with `uv sync`. The torch, torchvision, and
+# pytorch-triton-xpu wheels for Intel XPU live on the PyTorch XPU index
+# (https://download.pytorch.org/whl/xpu), not on PyPI. The [tool.uv.sources]
+# block below tells uv to fetch them from there. Vanilla pip does not parse
+# [tool.uv.sources] / [[tool.uv.index]] and will look for the packages on
+# PyPI instead, which won't work for the XPU variants.
+#=======
+#>>>>>>> main
 [[tool.uv.index]]
 name = "pytorch"
 url = "https://download.pytorch.org/whl/cpu"
diff --git a/Finetune_Image_Captioning/pyproject.toml b/Finetune_Image_Captioning/pyproject.toml
index 639d7f2..310d2df 100644
--- a/Finetune_Image_Captioning/pyproject.toml
+++ b/Finetune_Image_Captioning/pyproject.toml
@@ -28,6 +28,12 @@ dependencies = [
     "soupsieve>=2.8.4",
     "jupyterlab>=4.5.9",
 ]
+# NOTE: Install with `uv sync`. The torch, torchvision, and
+# pytorch-triton-xpu wheels for Intel XPU live on the PyTorch XPU index
+# (https://download.pytorch.org/whl/xpu), not on PyPI. The [tool.uv.sources]
+# block below tells uv to fetch them from there. Vanilla pip does not parse
+# [tool.uv.sources] / [[tool.uv.index]] and will look for the packages on
+# PyPI instead, which won't work for the XPU variants.
 [tool.uv.sources]
 torch = [
   { index = "pytorch-xpu", marker = "sys_platform == 'win32' or sys_platform == 'linux'" },
diff --git a/Genre-driven-storytelling/pyproject.toml b/Genre-driven-storytelling/pyproject.toml
index 403c1ec..ea4c56b 100644
--- a/Genre-driven-storytelling/pyproject.toml
+++ b/Genre-driven-storytelling/pyproject.toml
@@ -25,6 +25,12 @@ dependencies = [
     "jupyterlab>=4.5.9",
 ]
 
+# NOTE: Install with `uv sync`. The torch, torchvision, and
+# pytorch-triton-xpu wheels for Intel XPU live on the PyTorch XPU index
+# (https://download.pytorch.org/whl/xpu), not on PyPI. The [tool.uv.sources]
+# block below tells uv to fetch them from there. Vanilla pip does not parse
+# [tool.uv.sources] / [[tool.uv.index]] and will look for the packages on
+# PyPI instead, which won't work for the XPU variants.
 [tool.uv.sources]
 torch = [
   { index = "pytorch-xpu", marker = "sys_platform == 'win32' or sys_platform == 'linux'" },
diff --git a/LLM/PyTorch/pyproject.toml b/LLM/PyTorch/pyproject.toml
index 984f69d..23e0c97 100644
--- a/LLM/PyTorch/pyproject.toml
+++ b/LLM/PyTorch/pyproject.toml
@@ -33,6 +33,12 @@ dependencies = [
     "msgpack>=1.2.1",
 ]
 
+# NOTE: Install with `uv sync`. The torch, torchvision, torchaudio, and
+# pytorch-triton-xpu wheels for Intel XPU live on the PyTorch XPU index
+# (https://download.pytorch.org/whl/xpu), not on PyPI. The [tool.uv.sources]
+# block below tells uv to fetch them from there. Vanilla pip does not parse
+# [tool.uv.sources] / [[tool.uv.index]] and will look for the packages on
+# PyPI instead, which won't work for the XPU variants.
 [tool.uv.sources]
 torch = [
   { index = "pytorch-xpu", marker = "sys_platform == 'win32' or sys_platform == 'linux'" },