diff --git a/requirements.txt b/requirements.txt
index c8f9f45..0160357 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,10 +2,8 @@
 # This file is autogenerated by pip-compile with Python 3.8
 # by the following command:
 #
-#    pip-compile --index-url=https://nexus.osdc.io/repository/pypi-all/simple
+#    pip-compile
 #
---index-url https://nexus.osdc.io/repository/pypi-all/simple
-
 attrs==23.2.0
     # via
     #   jsonschema
@@ -34,7 +32,7 @@ jsonschema==4.23.0
     # via gdc-client (pyproject.toml)
 jsonschema-specifications==2023.12.1
     # via jsonschema
-lxml==4.4.2
+lxml==5.2.2
     # via gdc-client (pyproject.toml)
 ndg-httpsclient==0.5.0
     # via gdc-client (pyproject.toml)
diff --git a/setup.cfg b/setup.cfg
index 32cd845..58c6005 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -15,7 +15,7 @@ classifiers =
     Programming Language :: Python
     Programming Language :: Python :: 3
     Programming Language :: Python :: 3.8
-	Programming Language :: Python :: 3.9
+    Programming Language :: Python :: 3.9
     License :: OSI Approved :: Apache Software License
     Topic :: Internet :: WWW/HTTP
 
@@ -27,7 +27,7 @@ python_requires = >=3.8
 install_requires =
     cryptography
     jsonschema
-    lxml~=4.4.2
+    lxml
     ndg-httpsclient~=0.5.0
     pyasn1
     pyOpenSSL