diff --git a/docker-compose.yml b/docker-compose.yml
index 2acf677..3d428e7 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,10 +1,8 @@
-version: "3"
-
 networks:
   codeocean:
     driver: bridge
     external: false
-    
+
 services:
   codeocean-db:
     extends:
diff --git a/poseidon b/poseidon
index 8e039c4..f9a6ba8 160000
--- a/poseidon
+++ b/poseidon
@@ -1 +1 @@
-Subproject commit 8e039c4ecb8f20612ba1969d6426b7457e2dd389
+Subproject commit f9a6ba8f1cc7c25a193de13bca16d9ee145835ab