diff --git a/plot_coverage/requirements.txt b/plot_coverage/requirements.txt
index 970f0f6..619ba58 100644
--- a/plot_coverage/requirements.txt
+++ b/plot_coverage/requirements.txt
@@ -3,4 +3,4 @@ click==7.1.2
 html5lib==1.1
 pandas==1.0.5
 plotly==4.8.1
-lxml==4.5.1
+lxml==4.6.3
diff --git a/setup.py b/setup.py
index 98d86b1..06a537a 100644
--- a/setup.py
+++ b/setup.py
@@ -10,7 +10,7 @@
 with open('HISTORY.rst') as history_file:
     history = history_file.read()
 
-requirements = ['Click>=7.0', 'beautifulsoup4==4.9.1', 'html5lib==1.1', 'pandas==1.0.5', 'plotly==4.8.1', 'lxml==4.5.1']
+requirements = ['Click>=7.0', 'beautifulsoup4==4.9.1', 'html5lib==1.1', 'pandas==1.0.5', 'plotly==4.8.1', 'lxml==4.6.3']
 
 setup_requirements = ['pytest-runner', ]