diff --git a/hosts/test-vm/configuration.nix b/hosts/test-vm/configuration.nix
index 144a9b4..3bccf50 100644
--- a/hosts/test-vm/configuration.nix
+++ b/hosts/test-vm/configuration.nix
@@ -22,6 +22,7 @@
     virtualisation.vmVariant = {
       # following configuration is added only when building VM with build-vm
       virtualisation = {
+        diskSize = 4096;
         memorySize = 2048;
         cores = 3;
         graphics = false;