diff --git a/repos/scheme b/repos/scheme
index 67b5c8d6c..591893b9a 160000
--- a/repos/scheme
+++ b/repos/scheme
@@ -1 +1 @@
-Subproject commit 67b5c8d6ce19fd5265f13204fec0a3efa9e095d9
+Subproject commit 591893b9a8b9ec85f5cef86e0cc1028012ad9f0e