diff --git a/README.md b/README.md
index c2e6b928..f6c03915 100644
--- a/README.md
+++ b/README.md
@@ -145,6 +145,7 @@ Optionally, you can use the following command-line flags:
 | `--flexgen`                   |         Enable the use of FlexGen offloading. |
 |  `--percent PERCENT [PERCENT ...]`    |  FlexGen: allocation percentages. Must be 6 numbers separated by spaces (default: 0, 100, 100, 0, 100, 0). |
 |  `--compress-weight`                  |  FlexGen: Whether to compress weight (default: False).|
+|  `--pin-weight [PIN_WEIGHT]`          |       FlexGen: whether to pin weights (setting this to False reduces CPU memory by 20%). |
 | `--deepspeed`    | Enable the use of DeepSpeed ZeRO-3 for inference via the Transformers integration. |
 | `--nvme-offload-dir NVME_OFFLOAD_DIR`    | DeepSpeed: Directory to use for ZeRO-3 NVME offloading. |
 | `--local_rank LOCAL_RANK`    | DeepSpeed: Optional argument for distributed setups. |