diff --git a/requirements.txt b/requirements.txt
index 3ac87f91..9e500a03 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -18,3 +18,5 @@ jsonschema
 graphviz
 ipaddress
 deepdiff==3.3.0
+attr
+attrs
\ No newline at end of file