diff --git a/requirements.txt b/requirements.txt
index df0f2f4..a65422b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -81,7 +81,7 @@ libcove==0.32.0
     # via libcoveocds
 libcoveocds[perf]==0.17.0
     # via -r requirements.in
-lxml==6.0.0
+lxml==6.1.0
     # via flattentool
 ocdsextensionregistry==0.6.9
     # via
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 1015c52..f7e55ff 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -119,7 +119,7 @@ libcove==0.32.0
     #   libcoveocds
 libcoveocds[perf]==0.17.0
     # via -r requirements.txt
-lxml==6.0.0
+lxml==6.1.0
     # via
     #   -r requirements.txt
     #   flattentool