diff --git a/requirements.txt b/requirements.txt
index 78ebfdea..92e1b91d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,7 @@
 # project requirements, install them using following command:
 # pip install -r requirements.txt
-lxml[html_clean]
+lxml
+lxml-html-clean
 requests
 rdflib>=6.0.0
 pyrdfa3
diff --git a/setup.py b/setup.py
index a7fb8ab2..bc4b0101 100644
--- a/setup.py
+++ b/setup.py
@@ -41,6 +41,7 @@ def get_version():
     python_requires=">=3.8",
     install_requires=[
         "lxml",
+        "lxml-html-clean",
         "rdflib>=6.0.0",
         "pyrdfa3",
         "mf2py",