--- a/MozillaFirefox/_constraints	Thu Jan 31 11:21:22 2019 +0100
+++ b/MozillaFirefox/_constraints	Wed Feb 13 08:51:42 2019 +0100
@@ -20,4 +20,14 @@
       </memory>
     </hardware>
   </overwrite>
+  <overwrite>
+    <conditions>
+      <arch>x86_64</arch>
+    </conditions>
+    <hardware>
+      <memory>
+        <size unit="G">16</size>
+      </memory>
+    </hardware>
+  </overwrite>
 </constraints>