Pin modelopt and transformers versions in README

README.md

@@ -57,6 +57,15 @@ Runs NVIDIA's official ModelOpt PTQ pipeline (`hf_ptq.py`) with full `nvfp4` qua
 
 **Runtime:** Model loading takes ~53 minutes. Quantization + calibration takes several hours. Total expect 6-12 hours.
 
+## Dependencies (pinned versions)
+
+- **nvidia-modelopt:** `0.45.0.dev64+g579fc6c31` (installed from git, not PyPI)
+- **transformers:** `5.8.0.dev0` (from git, required for DeepSeekV4 support)
+- **kernels:** latest (`pip install -U kernels` — needed for finegrained FP8 ops)
+- **Python:** 3.10
+
+The `quant_module_patched.py` fix is for **modelopt 0.45.0.dev64** specifically. Later versions may include the fix natively — check before applying. Using a different modelopt version may cause patches to fail or V4 quantization to break.
+
 ## Key Notes
 
 - Use BF16 source — V4's mixed precision causes issues, FP8 source has kernel problems on Blackwell