diff --git a/nixos/tests/qemu-vm-external-disk-image.nix b/nixos/tests/qemu-vm-external-disk-image.nix
index b01cabbadb5d..6b6a2ef29a28 100644
--- a/nixos/tests/qemu-vm-external-disk-image.nix
+++ b/nixos/tests/qemu-vm-external-disk-image.nix
@@ -32,7 +32,7 @@ let
         label = rootFslabel;
         partitionTableType = "efi";
         format = "qcow2";
-        bootSize = "32M";
+        bootSize = "128M";
         additionalSpace = "0M";
         copyChannel = false;
       };