diff --git a/nanokvm/models.py b/nanokvm/models.py
index 4881929..b910ef8 100644
--- a/nanokvm/models.py
+++ b/nanokvm/models.py
@@ -91,6 +91,7 @@ class HWVersion(StrEnum):
     ALPHA = "Alpha"
     BETA = "Beta"
     PCIE = "PCIE"
+    PRO = "Pro"
     UNKNOWN = "Unknown"