diff --git a/README.md b/README.md
index d62a192..1cc23da 100644
--- a/README.md
+++ b/README.md
@@ -89,7 +89,7 @@ cd Fss-Mini-Rag
 python3 -m venv .venv
 source .venv/bin/activate    # Linux/macOS
 # .venv\Scripts\activate     # Windows
-pip install -e .
+pip install .
 ```
 
 **Step 2: Start Using**
diff --git a/requirements.txt b/requirements.txt
index fad790b..d65ff55 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -19,4 +19,7 @@ rich>=13.0.0
 PyYAML>=6.0.0
 
 # Text search utilities (lightweight)
-rank-bm25>=0.2.2
\ No newline at end of file
+rank-bm25>=0.2.2
+
+# System monitoring
+psutil
\ No newline at end of file