Updates hydra

diff --git a/hydra b/hydra
index e5158a145d520e4c55a3f54e0999bf66b554641c..4f6b37431e9fc86d03e2805e6ded3ee18f35f13b 160000 (submodule)
--- a/hydra
+++ b/hydra
@@ -1 +1 @@
-Subproject commit e5158a145d520e4c55a3f54e0999bf66b554641c
+Subproject commit 4f6b37431e9fc86d03e2805e6ded3ee18f35f13b