diff --git a/src/modules/koans b/src/modules/koans
index fda6847..89173f1 160000
--- a/src/modules/koans
+++ b/src/modules/koans
@@ -1 +1 @@
-Subproject commit fda6847671223ccb640f458979a74d5cb126c066
+Subproject commit 89173f1676f65ad62c2da89067103b9a4c70ec23