diff --git a/manifest-tools/requirements.txt b/manifest-tools/requirements.txt
index 1d188131..16ecb956 100644
--- a/manifest-tools/requirements.txt
+++ b/manifest-tools/requirements.txt
@@ -1,3 +1,3 @@
 dulwich == 0.19.15
-lxml == 4.5.0
+lxml == 4.9.1
 jira == 2.0.0