diff --git a/requirements.txt b/requirements.txt
old mode 100755
new mode 100644
index 32c6df3..f457079
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 collatex==2.2
 pie-extended==0.0.40
-lxml==4.6.5
+lxml==4.9.1
 jinja2==3.0.3
 Levenshtein==0.16.0
diff --git a/requirements_spo.txt b/requirements_spo.txt
index ee464d9..4e7608f 100644
--- a/requirements_spo.txt
+++ b/requirements_spo.txt
@@ -12,7 +12,7 @@ idna==2.8
 Jinja2==2.11.3
 jmespath==0.9.4
 JSON-minify==0.3.0
-lxml==4.6.5
+lxml==4.9.1
 networkx==2.3
 nlp-pie==0.2.2
 numpy==1.22.0