diff --git a/_constraints b/_constraints
index 293a909..9709b20 100644
--- a/_constraints
+++ b/_constraints
@@ -2,10 +2,10 @@
 <constraints>
   <hardware>
     <disk>
-       <size unit="G">12</size>
+       <size unit="G">20</size>
     </disk>
     <memory>
-       <size unit="G">8</size>
+       <size unit="G">12</size>
     </memory>
   </hardware>
   <sandbox>kvm</sandbox>