diff --git a/requirements.txt b/requirements.txt
index 8ec6171..74843b6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,7 +1,7 @@
 APScheduler==3.6.3
 Flask==1.1.1
 Flask-RESTful==0.3.8
-lxml==4.5.0
+lxml==4.9.1
 numpy==1.19.2
 pre-commit==2.7.1
 psutil==5.7.2
diff --git a/scraping/requirements.txt b/scraping/requirements.txt
old mode 100755
new mode 100644
index b082d74..d719b96
--- a/scraping/requirements.txt
+++ b/scraping/requirements.txt
@@ -1,6 +1,6 @@
 boto3==1.15.16
 dnspython==2.0.0
-lxml==4.5.0
+lxml==4.9.1
 numpy==1.19.2
 requests==2.24.0
 pymongo==3.10.1
diff --git a/viz/requirements.txt b/viz/requirements.txt
index 62a5ebf..2c84b4b 100644
--- a/viz/requirements.txt
+++ b/viz/requirements.txt
@@ -16,5 +16,5 @@ selenium==3.141.0
 wget==3.2
 Flask==1.1.1
 psutil==5.7.2
-lxml==4.5.0
+lxml==4.9.1
 python-dateutil==2.8.1
\ No newline at end of file