diff --git a/git-update b/git-update
index 3a4ea2a7a5..97356b927c 100755
--- a/git-update
+++ b/git-update
@@ -49,6 +49,7 @@ def update_repo(repo_name, repo_dir, revision, no_interaction, recurse_i=0):
             git("checkout", revision, repository_path=repo_dir)
         else:
             git("pull", "--rebase", repository_path=repo_dir)
+        git("submodule", "update", repository_path=repo_dir)
     except Exception as e:
         out = getattr(e, "output", b"").decode()
         if not no_interaction: