diff --git a/upstream-git.lisp b/upstream-git.lisp
index 6d2d6a2..3644494 100644
--- a/upstream-git.lisp
+++ b/upstream-git.lisp
@@ -63,32 +63,16 @@
   (:method ((source git-at-commit-source))
     (format nil "~A" (commit source))))
 
-(defun submodule-git-archive-command (prefix directory)
-  (flet ((concat (&rest strings)
-           (apply #'concatenate 'string strings)))
-    (let* ((tardir (concat (native-directory-string directory) "$path/"))
-           (tarfile (concat tardir "$name.tar")))
-      (format nil
-              "mkdir -p ~S ~
-               && git archive HEAD --format=tar --prefix=~S > ~S"
-              tardir (concat prefix "$path/") tarfile))))
-
 (defmethod make-release-tarball ((source git-source) output-file)
   (let ((prefix (release-tarball-prefix source))
         (checkout (ensure-source-cache source)))
     (in-temporary-directory prefix
       (let ((temptar (merge-pathnames "package.tar"))
-            (tempgz (merge-pathnames "package.tar.gz"))
-            (tempsub (merge-pathnames "submodules/")))
-        (ensure-directories-exist tempsub)
+            (tempgz (merge-pathnames "package.tar.gz")))
         (with-posix-cwd checkout
           (with-binary-run-output temptar
             (run "git" "archive" :format "tar" :prefix prefix
                  (target-ref source)))
-          (run "git" "submodule" "foreach" :recursive :quiet
-               (submodule-git-archive-command prefix tempsub))
-          (dolist (archive (directory (merge-pathnames "**/*.tar" tempsub)))
-            (run "tar" "Af" temptar archive))
           (run "gzip" "-vn9" temptar)
           (copy tempgz output-file))))))