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README.md

@@ -57,8 +57,17 @@ Held-out KDPII Korean PII test set, span-level F1:
 
 ### Install
 
+The `openai_privacy_filter` architecture is in `transformers` HEAD but not yet in
+a stable PyPI release, so install from source:
+
+```bash
+pip install "git+https://github.com/huggingface/transformers.git" peft torch safetensors accelerate
+```
+
+If you already have a stable transformers installed, force the upgrade:
+
 ```bash
-pip install transformers peft torch
+pip uninstall -y transformers && pip install "git+https://github.com/huggingface/transformers.git"
 ```
 
 ### Load Model