diff --git a/requirements.txt b/requirements.txt
index 400ec0f8562494e5e1e12c72c2cbcffbc01d68e3..2e8f5e94c1dd3fd747dbfa97dd5095247ad6ad8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,3 +16,4 @@ tornado==6.1
 tzdata==2021.5
 tzlocal==4.1
 urllib3==1.26.8
+lxml==4.8.0