diff --git a/src/deb/cross.rs b/src/deb/cross.rs
index 770667c..8cd849d 100644
--- a/src/deb/cross.rs
+++ b/src/deb/cross.rs
@@ -76,6 +76,7 @@ impl EphemeralContextGuard {
         let status = context::current()
             .command("mmdebstrap")
             .arg("--variant=buildd")
+            .arg("--mode=unshare")
             .arg("--format=tar")
             .arg(series)
             .arg(tarball_path.to_string_lossy().to_string())