diff --git a/tools/requirements.txt b/tools/requirements.txt
index 8bff1fb56..b6be80271 100644
--- a/tools/requirements.txt
+++ b/tools/requirements.txt
@@ -1,2 +1,3 @@
 ansicolors==1.1.8
 sslcrypto==5.3
+pexpect==4.8.0
\ No newline at end of file