diff --git a/requirements.txt b/requirements.txt
index 96f2704c..97f91ff1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -11,4 +11,5 @@ pillow
 flask
 pyahocorasick
 blackboxprotobuf
-lz4
\ No newline at end of file
+lz4
+lxml
\ No newline at end of file
diff --git a/setup.py b/setup.py
index de935079..26340137 100644
--- a/setup.py
+++ b/setup.py
@@ -18,6 +18,7 @@
     "flask",
     "lz4",
     "blackboxprotobuf",
+    "lxml"
 ]
 
 setup(