diff --git a/.gitignore b/.gitignore
index b33172f..bc7b989 100644
--- a/.gitignore
+++ b/.gitignore
@@ -182,4 +182,3 @@ dmypy.json
 
 netbox-docker
 /.vscode
-class_diagram/
diff --git a/README.md b/README.md
index fce44ce..d9414bf 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ The goal is to generate an existing infrastructure on Netbox and have the abilit
 
 # Requirements
 
-- Netbox >= 2.6
+- Netbox >= 3.7
 - Python >= 3.7
 - [pynetbox](https://github.com/digitalocean/pynetbox/)
 - [python3-netaddr](https://github.com/drkjam/netaddr)