diff --git a/requirements.txt b/requirements.txt
index 12035ac0..ab4b1b07 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -4,7 +4,7 @@ mistune==0.7.3
 polib==1.0.3
 pyparsing==2.2.0
 six
-lxml==4.6.2
+lxml==4.9.1
 beautifulsoup4==4.9.3
 
 # InDesign
diff --git a/setup.py b/setup.py
index 391c83d0..4e377dc0 100644
--- a/setup.py
+++ b/setup.py
@@ -8,7 +8,7 @@
     "mistune==0.7.3",
     "PyYAML==5.4.1",
     "pyparsing==2.2.0",
-    "lxml==4.6.2",
+    "lxml==4.9.1",
     "beautifulsoup4==4.9.3",
     "ucflib @ git+https://github.com/kbairak/ucflib.git@py3_compatibility#egg=ucflib-0.2.1",  # noqa
 ]