1 files changed, 1 insertions, 1 deletions

diff --git a/tox.ini b/tox.ini
index e23387e9..5fca42af 100644
--- a/tox.ini
+++ b/tox.ini
@@ -33,7 +33,7 @@ basepython = python3.8
 whitelist_externals = bash
 commands =
   pylint --min-similarity-lines=10 \
-    --disable=locally-disabled --ignore-imports=y --reports=n xtesting
+    --disable=locally-disabled --ignore-imports=y --reports=n --extension-pkg-whitelist=lxml xtesting
 
 [testenv:yamllint]
 basepython = python3.8