diff --git a/ca_manager/models/authority.py b/ca_manager/models/authority.py
index 03a6caa..d819bb9 100755
--- a/ca_manager/models/authority.py
+++ b/ca_manager/models/authority.py
@@ -80,6 +80,7 @@ def sign(self, request):
 
         cert.save()
         self.serial += 1
+        self.save()
         return cert.path
 
     def generate_certificate(self, request):