diff --git a/nix/docker/heptapod/default.nix b/nix/docker/heptapod/default.nix
index 963e16c6a9..0a2d6c714b 100644
--- a/nix/docker/heptapod/default.nix
+++ b/nix/docker/heptapod/default.nix
@@ -14,7 +14,7 @@ in pkgs.dockerTools.buildImage rec {
   fromImage = origImage;
   fromImageName = origImageArgs.finalImageName;
   fromImageTag = origImageArgs.finalImageTag;
-  diskSize = 9216;
+  diskSize = 10216;
   runAsRoot = ''
     #!{pkgs.runtimeShell}
     cat <<"EOF" >/sshd_ca.pub