diff --git a/packages/zfs/config.sh b/packages/zfs/config.sh
index 6d9e0ae..c6afc2d 100644
--- a/packages/zfs/config.sh
+++ b/packages/zfs/config.sh
@@ -56,7 +56,7 @@ function prepare() {
 		zlib1g-dev
 	logmust install_kernel_headers
 	logmust install_pkgs "$DEPDIR"/delphix-rust/*.deb
-	logmust cargo install cargo-bundle-licenses
+	logmust cargo install cargo-bundle-licenses --locked
 	logmust install_pkgs "$DEPDIR"/delphix-go/*.deb
 	logmust install_pkgs "$DEPDIR"/dwarves/*.deb
 }