diff --git a/ChatQnA/benchmark/performance/README.md b/ChatQnA/benchmark/performance/README.md
index f5a9e062f..f1ff2e392 100644
--- a/ChatQnA/benchmark/performance/README.md
+++ b/ChatQnA/benchmark/performance/README.md
@@ -384,6 +384,7 @@ And then run the benchmark tool by:
 
 ```bash
 cd GenAIEval/evals/benchmark
+pip install -r ../../requirements.txt
 python benchmark.py
 ```