diff --git a/flake.nix b/flake.nix
index 296690e3c1d90f802df682eccba718d65de1431b..40f35b3294c54038f2acc26b2962160e864dd93d 100644
--- a/flake.nix
+++ b/flake.nix
@@ -43,6 +43,7 @@
             };
             apptainer = pkgs.singularity-tools.buildImage {
               name = "nxenv";
+              diskSize = 1024*25;
               runScript = "${runscript}";
             };
           };