diff --git a/README.md b/README.md
index cbb3a43..8c067ad 100644
--- a/README.md
+++ b/README.md
@@ -12,7 +12,7 @@ ANGEL (Automated Navigator for Gathering and Executing Local tools) is a cross-p
 ```bash
 python -m venv .venv
 source .venv/bin/activate  # Windows: .\.venv\Scripts\Activate.ps1
-pip install -r requirements.txt
+pip install --prefer-binary -r requirements.txt
 pip install -e .
 angel init
 angel web
@@ -23,7 +23,7 @@ Configuration is stored in `~/.config/angel/config.toml` (Linux/macOS) or `%APPD
 
 ## Development
 ```bash
-pip install -r requirements-dev.txt
+pip install --prefer-binary -r requirements-dev.txt
 pre-commit install
 pytest
 ```