diff --git a/nixos/tests/docker-tools-nix-shell.nix b/nixos/tests/docker-tools-nix-shell.nix
index c2ae2124e0a1..e64db38e82cc 100644
--- a/nixos/tests/docker-tools-nix-shell.nix
+++ b/nixos/tests/docker-tools-nix-shell.nix
@@ -17,7 +17,7 @@ in
       { ... }:
       {
         virtualisation = {
-          diskSize = 3072;
+          diskSize = 4000;
           docker.enable = true;
         };
       };