diff --git a/requirements.txt b/requirements.txt
index 901d513..120dd01 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -23,3 +23,4 @@ xarray==2024.10.0
 netcdf4==1.7.2
 pydap==3.5.1
 beautifulsoup4==4.12.3
+lxml==5.3.0