diff --git a/requirements.txt b/requirements.txt
index 4303eb3442267e8d021924b323cf9fb76171aec6..3cdbd3a9373e7b26e3127f4625905d065fe76a78 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,4 +2,6 @@ setuptools_scm
 numpy
 spython
 thepipe
+particle
 click
+pylhe