diff --git a/requirements-dev.txt b/requirements-dev.txt
index 8f1a14b7..c053c88f 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -33,7 +33,7 @@ grip==4.6.1
 
 # Packaging
 # Used to put together a WiX configuration from template/auto-gen
-lxml==4.8.0
+lxml==4.9.0
 # We only need py2exe on windows.
 # Pre-release version addressing semantic_version 2.9.0+ issues:
 # <https://github.com/py2exe/py2exe/issues/126>