diff --git a/proxmox.py b/proxmox.py
index 0c87d21..66cc9e2 100755
--- a/proxmox.py
+++ b/proxmox.py
@@ -86,7 +86,7 @@ class ProxmoxPoolList(list):
 
 class ProxmoxVersion(dict):
     def get_version(self):
-        return float(self['version'])
+        return float(self['version'].split('-')[0])
 
 
 class ProxmoxPool(dict):