diff --git a/deployment/check/data-model-tf-proxmox/nixosTest.nix b/deployment/check/data-model-tf-proxmox/nixosTest.nix
index da737063..9eb50ab4 100644
--- a/deployment/check/data-model-tf-proxmox/nixosTest.nix
+++ b/deployment/check/data-model-tf-proxmox/nixosTest.nix
@@ -109,8 +109,8 @@ in
         ipAddress = "192.168.1.1";
       };
       virtualisation = {
-        diskSize = 2 * 1024;
-        memorySize = 2048;
+        diskSize = 24 * 1024;
+        memorySize = 4 * 1024;
       };
     };
 
@@ -161,6 +161,9 @@ in
           KMS_KEY = "tsjxw9NjKUBUlzbTnD7orqIAdEmpGYRARvxD51jtY+o=";
         };
       };
+      virtualisation = {
+        memorySize = lib.mkForce (24 * 1024);
+      };
     };
 
   extraTestScript = ''