diff --git a/_constraints b/_constraints
index 8168966..091cbbb 100644
--- a/_constraints
+++ b/_constraints
@@ -13,7 +13,7 @@
     </conditions>
     <hardware>
       <memory>
-        <size unit="G">10</size>
+        <size unit="G">9</size>
       </memory>
     </hardware>
   </overwrite>